Prostatic Adenocarcinoma (Prostate Gland Cancer) in Dogs
- Occurrence: rarer
- Location of illness: Abdomen/pelvis
Prostatic adenocarcinoma is a malignantMalignant means "cancerous" and is used to describe tumors or neoplasms that grow invasively and have the ability to metastasize. Malignant tumors can cause serious health problems in dogs and cats. tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. that develops from the glandular cells of the dog’s prostate gland. This form of prostate cancerCancer refers to the uncontrolled proliferation of cells that can lead to tumors or spread throughout the body. Various types of cancer occur in dogs and cats, ranging from skin cancer to lymphomas. is characterized by aggressive growth and a high tendency to metastasize. Unlike humans, where prostate cancerCancer refers to the uncontrolled proliferation of cells that can lead to tumors or spread throughout the body. Various types of cancer occur in dogs and cats, ranging from skin cancer to lymphomas. is one of the most common tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. diseases, prostatic adenocarcinoma is relatively rare in dogs. It accounts for approximately 0.2-0.6% of all canineCanine refers to anything related to dogs. The term is used to describe characteristics, diseases, or specific aspects that specifically affect dogs. malignancies. Nevertheless, this disease is of considerable clinical importance due to its poor prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. and often late diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients..
The most important facts at a glance
Prostatic adenocarcinoma in dogs is a rare but aggressive tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. disease that primarily affects older male dogs. In contrast to benignBenign refers to a non-invasive, non-serious condition that is not life-threatening. In medicine, the term is often used to describe benign tumors that do not metastasize, meaning they do not form secondary tumors. prostate diseases, it occurs in both neutered and unneutered animals, with some studies even suggesting an increased risk for neutered male dogs. The exact causes are not fully understood, but genetic predispositions, hormonal factors, and environmental influences are discussed.
The clinical symptoms usually develop insidiously and mainly include disorders of urine and fecal output, hematuria, and non-specific symptoms such as weight loss and reduced performance. In advanced disease, neurological deficits can occur due to metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. in the spine. DiagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. requires a combination of clinical examination, imaging procedures, and histopathologicalHistopathological refers to the microscopic examination of tissue samples for the diagnosis of diseases. This technique is used to identify the specific characteristics of diseases at the cellular level in dogs and cats. confirmation. Early metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. screening is particularly important, as distant metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. are often already present at the time of diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients..
The therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. is based on a multimodal concept that may include surgical procedures, radiation therapyRadiation therapy is the use of radiation, most often to treat cancer. It can be used to kill cancer cells or slow their growth without significantly damaging surrounding healthy tissue., chemotherapyChemotherapy refers to the treatment of diseases, especially cancer, with chemical substances or drugs. It aims to kill cancer cells or prevent their growth, but can also affect healthy cells., and targeted therapies. Despite therapeutic advances, the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. remains unfavorable, with medianMedian refers to the midline or center of the body or an organ. In veterinary medicine, the term can be used to describe the location of a structure in relation to the center of the body. survival times of 6 to 12 months with optimal therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions.. Aftercare focuses on regular check-ups, pain management, and maintaining quality of life.
Research in this area is constantly evolving, with promising approaches in targeted therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions., immunotherapy, and molecular diagnostics. A better understanding of tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. biology and the development of new therapeutic strategies could lead to improved treatment outcomes in the future.
Causes
The dog’s prostate is an unpaired, chestnut-shaped organ that surrounds the urethra and is located caudalCaudal refers to a position closer to the tail or posterior end of the body. In human medicine, the term is used to indicate the direction "downward" in relation to the body's longitudinal axis. to the bladder in the pelvic canal. It produces part of the seminal fluid and thus plays an important role in reproduction. Adenocarcinoma can develop in various areas of the prostate and typically spreads both locally invasively and via metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. in the body.
It is noteworthy that, in contrast to benignBenign refers to a non-invasive, non-serious condition that is not life-threatening. In medicine, the term is often used to describe benign tumors that do not metastasize, meaning they do not form secondary tumors. prostate diseases such as benignBenign refers to a non-invasive, non-serious condition that is not life-threatening. In medicine, the term is often used to describe benign tumors that do not metastasize, meaning they do not form secondary tumors. prostatic hyperplasiaHyperplasia refers to an increase in the number of cells in a tissue or organ, leading to enlargement. This can be a normal reaction or a sign of a disease., which occurs predominantly in intact male dogs, adenocarcinoma can occur in both neutered and unneutered dogs. In fact, there is evidence that neutered male dogs may even have an increased risk of developing this type of tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions., although the underlying mechanisms are not yet fully understood.
The exact causes of prostate cancerCancer refers to the uncontrolled proliferation of cells that can lead to tumors or spread throughout the body. Various types of cancer occur in dogs and cats, ranging from skin cancer to lymphomas. in dogs are unknown. Hormonal factors, genetic predispositions, and environmental factors may play a role.
- Hormonal influences: HormoneHormones are chemical messengers produced by endocrine glands and released into the bloodstream to affect specific cells or organs in the body. They regulate numerous bodily functions, including growth, metabolism, and reproduction. status (testosterone) plays a crucial role in prostate health. Studies suggest that both intact and neutered male dogs can develop prostate cancerCancer refers to the uncontrolled proliferation of cells that can lead to tumors or spread throughout the body. Various types of cancer occur in dogs and cats, ranging from skin cancer to lymphomas., although the situation is complex and other factors play a significant role.
- Genetic predispositionA predisposition is an innate inclination or susceptibility of an organism to certain diseases or conditions. In dogs and cats, there may be a genetic predisposition to certain conditions such as hip dysplasia or certain heart diseases.: Certain breeds (e.g., Golden Retrievers, German Shepherds) occasionally show clustering, but clear genetic markers are still being researched.
- Environmental factors: ExposureExposure refers to the Contact with or subjection to certain substances, environmental factors, or pathogens. In veterinary medicine, this can include Contact with toxins, allergens, or infectious agents that can cause health problems in dogs and cats. to environmental toxins or chronicChronic refers to a condition or disease that is long-lasting or permanent. Chronic diseases often develop slowly and can lead to persistent or recurring health problems over time. Inflammatory conditions can increase the risk.
It is noteworthy that, in contrast to benignBenign refers to a non-invasive, non-serious condition that is not life-threatening. In medicine, the term is often used to describe benign tumors that do not metastasize, meaning they do not form secondary tumors. prostate diseases such as benignBenign refers to a non-invasive, non-serious condition that is not life-threatening. In medicine, the term is often used to describe benign tumors that do not metastasize, meaning they do not form secondary tumors. prostatic hyperplasiaHyperplasia refers to an increase in the number of cells in a tissue or organ, leading to enlargement. This can be a normal reaction or a sign of a disease., which occurs predominantly in intact male dogs, adenocarcinoma can occur in both neutered and unneutered dogs. In fact, there is evidence that neutered male dogs may even have an increased risk of developing this type of tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions., although the underlying mechanisms are not yet fully understood.
The exact etiologyEtiology is the study of the causes and origins of diseases. It deals with the factors that contribute to the emergence and development of pathological conditions. of prostatic adenocarcinoma in dogs is not fully understood to date. In contrast to humans, where age, genetic factors, and hormonal influences are considered the main risk factors, the pathogenesisPathogenesis describes the process of the origin and development of a disease, including the mechanisms that lead to the disease's symptoms and signs. in dogs appears to be more complex. The following factors are discussed in current research:
Hormonal influences play a crucial, albeit paradoxical, role. While testosterone has a promoting effect in benignBenign refers to a non-invasive, non-serious condition that is not life-threatening. In medicine, the term is often used to describe benign tumors that do not metastasize, meaning they do not form secondary tumors. prostate diseases such as benignBenign refers to a non-invasive, non-serious condition that is not life-threatening. In medicine, the term is often used to describe benign tumors that do not metastasize, meaning they do not form secondary tumors. prostatic hyperplasiaHyperplasia refers to an increase in the number of cells in a tissue or organ, leading to enlargement. This can be a normal reaction or a sign of a disease., adenocarcinoma appears to develop partly independently of androgen status. Recent studies show that neutered male dogs may even have up to four times higher risk of developing prostate cancerCancer refers to the uncontrolled proliferation of cells that can lead to tumors or spread throughout the body. Various types of cancer occur in dogs and cats, ranging from skin cancer to lymphomas. than intact animals. This suggests that the eliminationElimination refers to the process by which waste products and toxins are removed from the body. This includes excretion via the kidneys (urine), intestines (stool), lungs (breath), and skin. of androgens may impair protective mechanisms or that other hormonal factors come to the fore.
Genetic predispositions are being increasingly researched. Certain dog breeds such as Dobermans, Scottish Terriers, Airedale Terriers, and medium to large mixed breeds appear to be more frequently affected. Molecular genetic studies have identified changes in various genes that may be associated with the development of prostate carcinomas, including mutations in the BRCA2 gene and overexpression of the COX-2 enzyme.
Environmental factors and chronicChronic refers to a condition or disease that is long-lasting or permanent. Chronic diseases often develop slowly and can lead to persistent or recurring health problems over time. inflammatory processes are discussed as potential risk factors. Similar to humans, exposureExposure refers to the Contact with or subjection to certain substances, environmental factors, or pathogens. In veterinary medicine, this can include Contact with toxins, allergens, or infectious agents that can cause health problems in dogs and cats. to certain environmental toxins, heavy metals, or persistentPersistent means lasting or continuing for an extended period. In veterinary medicine, it can refer to chronic diseases or symptoms that do not subside. organic pollutants could contribute to carcinogenesis. ChronicChronic refers to a condition or disease that is long-lasting or permanent. Chronic diseases often develop slowly and can lead to persistent or recurring health problems over time. prostatitis could promote tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. development via inflammation-related DNADNA (deoxyribonucleic acid) is the molecule that carries the genetic instructions for the development, function, and reproduction of all known living organisms and many viruses. It is located in the cells of an organism and contains the information for heredity. damage and oxidative stressStress refers to the state of an organism reacting to external stimuli or demands. In veterinary medicine, stress can have physical or psychological effects on animals, impacting their health and well-being..
Age is another important factor, as prostate cancerCancer refers to the uncontrolled proliferation of cells that can lead to tumors or spread throughout the body. Various types of cancer occur in dogs and cats, ranging from skin cancer to lymphomas. occurs predominantly in older dogs. The average age of onset is around 10 years, with a range from 6 to 17 years.
Symptoms
The clinical signs of prostatic adenocarcinoma in dogs usually develop insidiously and are often noticed only in advanced stages of the disease. This contributes significantly to the unfavorable prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop., as metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. are often already present at the time of diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients.. The symptoms result both from the local spread of the tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. and from possible distant metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body..
The characteristic symptoms include disturbances of urinary and fecal function. The enlargement of the prostate and the invasiveInvasive describes medical procedures or pathogens that enter the body or penetrate tissue. In medicine, invasive procedures can range from minimally invasive techniques to open surgery. growth of the tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. can lead to compression or infiltrationInfiltration refers to the penetration or accumulation of cells or fluids in a tissue or area that is normally free of them. This can occur as part of inflammatory reactions, Tumors, or other pathological processes. of the urethra, which leads to dysuria (difficult urination), stranguria (painful urination with pressing), or pollakiuria (frequent Urinary urgency with small amounts of urine). In advanced cases, complete urethral obstruction with urinary retention can occur, which is a life-threatening emergency.
Similarly, compression of the rectum can lead to tenesmus (painful pressing during defecation) and constipationConstipation is another word for infrequent bowel movements where the stool is hard and difficult to pass. In dogs and cats, this can be caused by diet, lack of exercise, or underlying health issues.. Affected dogs often show a characteristic posture with a curved back and splayed hind legs during urination or defecation.
Hematuria (blood in the urine) is another common symptom that can be caused by tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. invasion into the urethra or bladder. Occasionally, hemospermia (blood in the ejaculate) also occurs, but this is rarely noticed by owners.
Systemic symptoms include progressiveProgressive describes a condition or disease that worsens over time. This term is often used to characterize the course of an illness that causes increasingly severe symptoms or damage. weight loss, inappetence, lethargy, and general performance decline. These non-specific signs are often an expression of advanced tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. disease and may indicate metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body..
If metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. occurs in the lumbar spine or pelvis, neurological deficits such as hind limb weakness, lameness, or paresisParesis is a partial or incomplete paralysis that manifests as a weakening of muscle strength. It can affect individual muscles or muscle groups and is often caused by damage to the nervous system. can occur. Lung metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. can lead to dyspneaDyspnea, also known as shortness of breath, is the subjective feeling of breathlessness or difficulty breathing. It can be a symptom of a variety of conditions, including heart disease, lung disease, and anemia. (shortness of breath) and cough. Lymph node metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. can be noticeable as enlarged, palpable structures in the abdomenThe abdomen, also known as the abdominal cavity, is the part of the body located between the rib cage and the pelvis. It houses several important organs, including the stomach, liver, kidneys, intestines, and spleen. or pelvic area.
Schmerzen manifest themselves through Behavioral changes, reluctance to move, or vocalizations during urination or defecation. Pain assessment is an important aspect of clinical management and should be performed regularly.
Diagnosis
- Clinical symptoms: Difficulties in defecating and urinating, blood in the urine, Weight loss and decreased performance. Spinal pain is also possible, as prostate Tumors often metastasize in the area of the lumbar vertebrae.
- Rectal examinationA rectal examination is a clinical examination method in which a doctor or veterinarian inserts a finger or instrument into the anus to check the rectum and surrounding structures for abnormalities.: InitialInitial means beginning or at the start. In medicine, it can refer to the first symptoms of a disease or the first phase of a treatment process. palpatory assessment of prostate size and shape.
- Imaging: UltrasoundUltrasound refers to sound waves that are above the hearing threshold of the human ear. In medicine, ultrasound is used for diagnostic imaging procedures to visualize internal organs, tissues, and blood flow., X-rayX-ray is an imaging technique that uses X-rays to create images of the inside of the body. It is often used to diagnose bone fractures, lung diseases, and other conditions. (especially thorax for metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. search) and CT/MRI for an accurate representation of the tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. and potential metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body..
- Fine needle aspiration/biopsy: HistopathologicalHistopathological refers to the microscopic examination of tissue samples for the diagnosis of diseases. This technique is used to identify the specific characteristics of diseases at the cellular level in dogs and cats. examination for a reliable diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. of adenocarcinoma. Molecular tests (e.g., analysis of specific receptors or gene mutations) are under investigation.
The diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. of prostatic adenocarcinoma requires a systematic approach and combines clinical examination, imaging procedures, and histopathologicalHistopathological refers to the microscopic examination of tissue samples for the diagnosis of diseases. This technique is used to identify the specific characteristics of diseases at the cellular level in dogs and cats. confirmation. An early and precise diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. is crucial for therapeutic management and prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. assessment.
The clinical examination begins with a thorough anamnesis, paying particular attention to changes in urination and defecation behavior as well as systemic symptoms. RectalRectal refers to anything involving the rectum, including administering medication or performing examinations via the anus. palpationPalpation is an examination method in which the condition of body tissues is assessed by feeling them with the hands. It is used to identify swelling, pain, or other abnormalities. allows an initialInitial means beginning or at the start. In medicine, it can refer to the first symptoms of a disease or the first phase of a treatment process. assessment of prostate size, shape, and consistency. Typically, the prostate affected by adenocarcinoma feels asymmetrical, irregularly limited, and hardened. The pain reaction upon palpationPalpation is an examination method in which the condition of body tissues is assessed by feeling them with the hands. It is used to identify swelling, pain, or other abnormalities. can vary.
Imaging procedures play a central role in diagnostics. AbdominalThe term "abdominal" refers to anything that concerns the belly or the abdomen. It is an adjectival expression used to describe the location, symptoms, or conditions that occur in the abdominal area. sonography allows a detailed representation of the prostate structure and can provide information on size changes, inhomogeneities, calcifications, or invasion into surrounding structures. Doppler sonography can also provide information about the vascularization of the tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions..
X-rays of the thorax are necessary for metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. search, as the lung is a common site of metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body.. AbdominalThe term "abdominal" refers to anything that concerns the belly or the abdomen. It is an adjectival expression used to describe the location, symptoms, or conditions that occur in the abdominal area. X-rays can show prostate calcifications or displacement of neighboring organs.
Advanced imaging procedures such as computed tomography (CT)Computed tomography (CT) is an imaging technique that uses X-rays and computer technology to create cross-sectional images of the body. It enables a detailed view of bones, organs, and other structures and is used for the diagnosis of injuries, diseases, and for planning medical interventions. and magnetic resonance imaging (MRI)Magnetic resonance imaging is an imaging technique that uses strong magnetic fields and radio waves to create detailed images of the inside of the body. It is used in veterinary medicine to diagnose diseases of the brain, spine, and other organs. offer superior detail and are particularly valuable for assessing local tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. extension, lymph node involvement, and possible distant metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body.. They are also important for therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. planning, especially if surgical intervention or radiation therapyRadiation therapy is the use of radiation, most often to treat cancer. It can be used to kill cancer cells or slow their growth without significantly damaging surrounding healthy tissue. is being considered.
The definitive diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. requires a histopathologicalHistopathological refers to the microscopic examination of tissue samples for the diagnosis of diseases. This technique is used to identify the specific characteristics of diseases at the cellular level in dogs and cats. examination of the prostate tissue. This can be done by fine needle aspiration, Tru-Cut biopsyA biopsy is a medical procedure in which a small amount of tissue is removed from the body to be examined under a microscope for signs of disease. Biopsies can help diagnose cancer and other conditions., or surgical biopsyA biopsy is a medical procedure in which a small amount of tissue is removed from the body to be examined under a microscope for signs of disease. Biopsies can help diagnose cancer and other conditions.. Fine needle aspiration is minimally invasiveInvasive describes medical procedures or pathogens that enter the body or penetrate tissue. In medicine, invasive procedures can range from minimally invasive techniques to open surgery., but offers less diagnostic certainty than tissue samples. Cytological examination typically shows cell clusters with clear malignancyMalignancy refers to the aggressiveness of a tumor, that is, its ability to grow invasively and metastasize. Malignant tumors can be life-threatening in dogs and cats and require specific treatment. criteria such as anisocytosis, anisokaryosis, prominent nucleoli, and increased mitotic activity.
Supplementary examinations include blood and urine analyses. Blood tests can provide information on paraneoplastic syndromes, Inflammatory conditions, or organ dysfunctionDysfunction refers to an impaired or abnormal function of an organ or system in the body. This can be due to diseases, disorders, or damage and can affect the quality of life.. The urine examination can detect hematuria, pyuria, or secondary Urinary tract infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease.. A bacteriological urine culture is indicated if a concomitant infectionAn infection is the colonization and multiplication of pathogens such as bacteria, viruses, fungi, or parasites in an organism, which often, but not always, leads to a disease. is suspected.
Molecular and immunohistochemical investigations are becoming increasingly important. Markers such as Ki-67, PCNA, or p53 can provide information about the proliferation rate and the biological behavior of the tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions.. In addition, specific receptors such as androgen or estrogenEstrogen is a group of steroid hormones that are primarily responsible in female animals for regulating the reproductive system and developing female characteristics. In dogs and cats, estrogens play an important role in the estrous cycle. receptors can be analyzed, which has potential therapeutic implications.
Therapy
- Surgical approaches: A radical prostatectomy can be considered, but is technically demanding and associated with functional risks (incontinenceIncontinence refers to the inability to voluntarily control urine or stool, leading to involuntary loss. There are various forms, including urinary incontinence and fecal incontinence, which can be caused by different factors., fistulaA fistula is an unnatural channel or connection between two organs, or between an organ and the body's surface, that can arise from disease, injury, or surgical procedures. In dogs and cats, fistulas can be a cause for concern and may require treatment. formation).
- Radiation therapyRadiation therapy is the use of radiation, most often to treat cancer. It can be used to kill cancer cells or slow their growth without significantly damaging surrounding healthy tissue.: Can be used palliatively or curatively, often in combination with other procedures.
- ChemotherapyChemotherapy refers to the treatment of diseases, especially cancer, with chemical substances or drugs. It aims to kill cancer cells or prevent their growth, but can also affect healthy cells. and targeted therapies: Certain protocols (e.g., based on doxorubicin or carboplatin) are used, the effectiveness of which varies. Newer studies on tyrosine kinase inhibitors or immune checkpoint inhibitors are promising, but are still in early stages.
- Hormones and castration: Castration alone does not appear to reliably prevent the development of adenocarcinoma, but can be useful for benignBenign refers to a non-invasive, non-serious condition that is not life-threatening. In medicine, the term is often used to describe benign tumors that do not metastasize, meaning they do not form secondary tumors. prostate changes (e.g., hyperplasiaHyperplasia refers to an increase in the number of cells in a tissue or organ, leading to enlargement. This can be a normal reaction or a sign of a disease.).
The treatment of prostatic adenocarcinoma in dogs poses a therapeutic challenge and usually requires a multimodal approach. The choice of therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. depends on the tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. stage, the patient’s general condition, and the available resources. Despite various treatment options, the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. remains unfavorable overall.
Surgical interventions include various procedures, of which total prostatectomy represents the most radical approach. This operation is technically demanding and associated with significant potential complications, including urinary incontinenceIncontinence refers to the inability to voluntarily control urine or stool, leading to involuntary loss. There are various forms, including urinary incontinence and fecal incontinence, which can be caused by different factors., urethral stricturesStrictures are pathological narrowings of tubes or ducts in the body that impede the normal flow of fluids or other substances. In dogs and cats, strictures can occur in the urethra, esophagus, or bile ducts and require medical treatment., or fistula formation. Newer, less invasiveInvasive describes medical procedures or pathogens that enter the body or penetrate tissue. In medicine, invasive procedures can range from minimally invasive techniques to open surgery. techniques such as partial prostatectomy or intracapsular prostatectomy are being explored to reduce the complication rate. Surgical therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. is often combined with adjuvant treatments to combat microscopic tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. residues.
Radiation therapyRadiation therapy is the use of radiation, most often to treat cancer. It can be used to kill cancer cells or slow their growth without significantly damaging surrounding healthy tissue. has established itself as a valuable treatment option, especially for non-resectable tumors or as adjuvant therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. after incomplete resection. Modern techniques such as intensity-modulated radiation therapyRadiation therapy is the use of radiation, most often to treat cancer. It can be used to kill cancer cells or slow their growth without significantly damaging surrounding healthy tissue. (IMRT) or stereotactic radiosurgery enable more precise irradiation of the tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. while sparing the surrounding tissue. Typical protocols include total doses of 45 to 54 Gy, divided into multipleMultiple means manifold or repeated and is used to describe conditions or events that occur in multiple instances or at different locations. In veterinary medicine, this may indicate multiple lesions, tumors, or other pathological changes. fractions. AcuteAcute refers to a condition that occurs suddenly and is usually of short duration. In a medical context, it describes symptoms or illnesses that can quickly become serious and require immediate attention. side effects can include cystitis, colitisColitis is an inflammation of the large intestine (colon). Symptoms can include diarrhea, abdominal pain, and blood in the stool. Colitis can be caused by infections, chronic inflammatory bowel diseases such as ulcerative colitis and Crohn's disease, or other causes., or dermatitis in the radiation field.
ChemotherapyChemotherapy refers to the treatment of diseases, especially cancer, with chemical substances or drugs. It aims to kill cancer cells or prevent their growth, but can also affect healthy cells. is often used as a systemic treatment, especially in metastatic disease. Various protocols based on doxorubicin, carboplatin, cisplatin, or mitoxantrone have shown some efficacy. However, response rates vary greatly, and the duration of remission is often limited. Newer studies are investigating the efficacy of metronomic chemotherapyChemotherapy refers to the treatment of diseases, especially cancer, with chemical substances or drugs. It aims to kill cancer cells or prevent their growth, but can also affect healthy cells., in which lower doses are administered continuously, which can lead to an anti-angiogenic effect.
Targeted therapies are becoming increasingly important. Tyrosine kinase inhibitors such as Toceranib (Palladia®) or Masitinib have shown promising results in preclinical and initialInitial means beginning or at the start. In medicine, it can refer to the first symptoms of a disease or the first phase of a treatment process. clinical studies. These substances inhibit specific signaling pathways that are important for tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. growth and metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body.. COX-2 inhibitors such as Piroxicam or Firocoxib are also used due to their anti-tumor and anti-inflammatory properties.
Immunotherapeutic approaches are under development. Checkpoint inhibitors, which are already established in human medicine, are also being investigated in veterinary medicine. These substances reactivate the body’s own immune responseAn immune response is the immune system's reaction to foreign substances (antigens), such as microorganisms or proteins. It involves a series of processes aimed at recognizing, fighting, and eliminating these antigens. against tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. cells. InitialInitial means beginning or at the start. In medicine, it can refer to the first symptoms of a disease or the first phase of a treatment process. studies with monoclonal antibodies against PD-1/PD-L1 or CTLA-4 show encouraging results in various canineCanine refers to anything related to dogs. The term is used to describe characteristics, diseases, or specific aspects that specifically affect dogs. tumors, including prostate carcinomas.
PalliativePalliative refers to treatments that aim to alleviate the symptoms of a disease without curing the disease itself. Palliative care focuses on improving the quality of life of patients with incurable diseases. measures are an essential component of the therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. concept. They aim to improve the quality of life and alleviate symptoms. This includes pain therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. with NSAIDsNSAID (non-steroidal anti-inflammatory drug) stands for non-steroidal anti-inflammatory drugs, a class of medications used to relieve pain, reduce inflammatory conditions, and lower fever without using steroidal agents. They are a commonly used pain reliever in veterinary medicine., opioids, or adjuvant analgesics, ensuring urinary drainageDrainage refers to the removal of fluid from body cavities, Wounds, or inflamed areas, often using a tube or other device. It is used to prevent infection and promote healing. through catheterization or stent implantation, as well as supportiveSupportive refers to supportive treatments that aim to alleviate symptoms and improve quality of life without directly treating the underlying cause of the disease. measures such as fluid therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions., nutritional management, and physiotherapyVeterinary physiotherapy encompasses a range of treatment methods aimed at improving the mobility and well-being of animals through exercise, massage, and other manual techniques. support.
Prognosis and follow-up care
The prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. for dogs with prostate cancerCancer refers to the uncontrolled proliferation of cells that can lead to tumors or spread throughout the body. Various types of cancer occur in dogs and cats, ranging from skin cancer to lymphomas. is generally poor, as the disease is often already advanced at the time of diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients.. Treatment strategies aim to improve the quality of life and slow the progressionProgression refers to the advancement or worsening of a disease over time. It describes an increase in the severity or extent of the disease symptoms. of the disease.
- TumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. stage: Early detection is essential for the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop., as prostate cancerCancer refers to the uncontrolled proliferation of cells that can lead to tumors or spread throughout the body. Various types of cancer occur in dogs and cats, ranging from skin cancer to lymphomas. can quickly metastasize to the lungs, lymph nodes, or bones.
- Quality of life: With comprehensive therapy (surgery, possibly radiation therapyRadiation therapy is the use of radiation, most often to treat cancer. It can be used to kill cancer cells or slow their growth without significantly damaging surrounding healthy tissue./chemotherapy), the symptoms can often be alleviated. Nevertheless, prostatic adenocarcinoma remains a serious diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients..
- Long-term survival: Depending on the aggressiveness and metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body., survival ranges from a few months to over a year. An interdisciplinary approach (oncologyOncology is the branch of medicine that deals with the diagnosis, treatment, and research of cancer. In veterinary medicine, this includes the treatment of cancers in animals., surgery, pain management) improves the quality of life.
Aftercare
- Regular check-ups: Examinations of prostate size, blood and urine analyses, as well as imaging procedures (X-ray/ultrasound/CT) are advisable at intervals of 3 to 6 months.
- Symptom-oriented management: Pain therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions., stabilization of urinary and fecal passage (if necessary, soft food, stool regulation).
The prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. for dogs with prostatic adenocarcinoma is generally unfavorable, mainly due to the late diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. and the high rate of metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body.. Various prognostic factors influence the course of the disease and survival time.
The tumor stage at the time of diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. is the most important prognostic factor. Dogs with localized disease have a better prognosis than those with regional lymph node involvement or distant metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body.. Unfortunately, approximately 40–80% of prostatic adenocarcinomas are diagnosed only in the metastatic stage, which limits the therapeutic options. The most common sites of metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. are the lungs, regional lymph nodes, liver, bones (especially the lumbar spine and pelvis), and kidneys.
HistopathologicalHistopathological refers to the microscopic examination of tissue samples for the diagnosis of diseases. This technique is used to identify the specific characteristics of diseases at the cellular level in dogs and cats. features such as the degree of differentiation, mitotic rate, and invasiveness of the tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. correlate with the prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop.. Highly undifferentiated tumors with high mitotic activity typically show a more aggressive biological behavior and are associated with shorter survival times.
The median survival time after diagnosisA diagnosis is the identification of a disease or condition by its symptoms and/or results from diagnostic tests. It is the first step in the management and treatment of patients. varies depending on the therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. and tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. stage. Without specific treatment, it is approximately 1–3 months. With multimodal therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. approaches, the survival time can be extended to 6–12 months, with individual patients also achieving longer survival times. After total prostatectomy, medianMedian refers to the midline or center of the body or an organ. In veterinary medicine, the term can be used to describe the location of a structure in relation to the center of the body. survival times of 3 to 14 months are reported, while radiation therapyRadiation therapy is the use of radiation, most often to treat cancer. It can be used to kill cancer cells or slow their growth without significantly damaging surrounding healthy tissue. can lead to median survival times of 5 to 12 months.
Follow-up care plays a crucial role in the management of dogs with prostatic adenocarcinoma. Regular check-ups should be performed at intervals of 1 to 3 months, depending on the patient’s clinical condition and the chosen therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions.. These examinations include:
Clinical evaluation with particular attention to urination and defecation behavior, pain assessment, and neurological status. The quality of life should be systematically recorded, for example, through validated questionnaires or scoring systems.
Imaging procedures to assess the response to therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. and for early detection of recurrences or metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body.. Thoracic radiographs, abdominalThe term "abdominal" refers to anything that concerns the belly or the abdomen. It is an adjectival expression used to describe the location, symptoms, or conditions that occur in the abdominal area. sonography, and, if necessary, CT/MRI examinations should be performed at regular intervals.
Laboratory tests including complete blood count, serumSerum is the liquid part of the blood that remains after coagulation. It does not contain blood cells or coagulation factors, but many other proteins, antibody and electrolytes. Serum is used in diagnostics for a variety of blood tests. biochemistry, and urinalysis to monitor organ function and to detect possible therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. side effects.
Pain management is a central aspect of follow-up care. The analgesicAn analgesic is a medication used to relieve Pain without affecting the patient's level of consciousness. therapy should be evaluated regularly and adjusted if necessary. A multimodal approach with NSAIDsNSAID (non-steroidal anti-inflammatory drug) stands for non-steroidal anti-inflammatory drugs, a class of medications used to relieve pain, reduce inflammatory conditions, and lower fever without using steroidal agents. They are a commonly used pain reliever in veterinary medicine., opioids, gabapentinoids, and local anesthetics may be necessary, especially in patients with bone metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body..
Supporting the owners through detailed education, psychologicalPsychological refers to anything related to the mind or behavior. In veterinary medicine, this can include the study of animal behavior, including stress responses and behavioral disorders. support, and practical assistance with home care is also important. The decision for euthanasia may be necessary in advanced stages of the disease and should be made in close consultation with the owners, with the animal’s quality of life being the priority.
Prevention
There is no guaranteed method for preventing prostatic adenocarcinoma in dogs, but castration reduces the risk of other prostate diseases, which indirectly facilitates early detection. From middle age onwards, male dogs should be examined rectally on a regular basis to detect changes early. Symptoms such as difficulty passing feces or urine, blood in the urine, or lameness in the hindquarters must be taken seriously. A healthy diet, normal body weight, and sufficient exercise promote general health. Genetic predispositions should be taken into account when selecting breeding animals. Early veterinary check-ups are the most important preventive approach.
Outlook on current research
Research on prostatic adenocarcinoma in dogs has made significant progress in recent years, opening up new diagnostic and therapeutic perspectives. Current research focuses on molecular characterization, innovative therapeutic approaches, and translational aspects.
In the field of molecular oncologyOncology is the branch of medicine that deals with the diagnosis, treatment, and research of cancer. In veterinary medicine, this includes the treatment of cancers in animals., genetic and epigenetic changes that contribute to the development and progressionProgression refers to the advancement or worsening of a disease over time. It describes an increase in the severity or extent of the disease symptoms. of canineCanine refers to anything related to dogs. The term is used to describe characteristics, diseases, or specific aspects that specifically affect dogs. prostate carcinomaA carcinoma is a type of cancer that originates in the epithelial cells that line the inner and outer surfaces of the body. Carcinomas are the most common form of cancer. are increasingly being identified. Genome-wide sequencing studies have revealed specific mutations and chromosomal aberrations that could represent potential therapeutic targets. Changes in genes such as PTEN, TP53, and BRCA1/2, which also play a role in human prostate carcinomaA carcinoma is a type of cancer that originates in the epithelial cells that line the inner and outer surfaces of the body. Carcinomas are the most common form of cancer., are of particular interest. The identification of specific molecular subtypes could enable more precise prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. and individualized therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. planning in the future.
Liquid biopsyA biopsy is a medical procedure in which a small amount of tissue is removed from the body to be examined under a microscope for signs of disease. Biopsies can help diagnose cancer and other conditions. procedures are being intensively researched to develop non-invasive diagnostic and monitoring options. The analysis of circulating tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. cells, cell-free DNA, or exosomes in the blood could revolutionize early detection, therapy monitoring, and recurrence diagnostics. InitialInitial means beginning or at the start. In medicine, it can refer to the first symptoms of a disease or the first phase of a treatment process. studies show promising results in the detection of tumor-specific biomarkers in the blood of dogs with prostate carcinomaA carcinoma is a type of cancer that originates in the epithelial cells that line the inner and outer surfaces of the body. Carcinomas are the most common form of cancer..
In the field of imaging, new techniques such as molecular imaging with tumor-specific tracers are being developed. PET-CT scans with radiotracers such as 18F-FDG or more specific markers could improve the sensitivity and specificity of tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. diagnostics and metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. screening.
Innovative therapeutic approaches are the focus of numerous clinical trials. Immunotherapy with checkpoint inhibitors such as anti-PD-1/PD-L1 antibodies shows promising results in initialInitial means beginning or at the start. In medicine, it can refer to the first symptoms of a disease or the first phase of a treatment process. studies in various canineCanine refers to anything related to dogs. The term is used to describe characteristics, diseases, or specific aspects that specifically affect dogs. tumors. Specifically for prostate carcinomaA carcinoma is a type of cancer that originates in the epithelial cells that line the inner and outer surfaces of the body. Carcinomas are the most common form of cancer., combinations of immunotherapy and conventional treatments are being evaluated to exploit synergistic effects.
Targeted therapies are being increasingly refined. In addition to established tyrosine kinase inhibitors, new substances are being developed that specifically target molecular changes in prostate carcinomaA carcinoma is a type of cancer that originates in the epithelial cells that line the inner and outer surfaces of the body. Carcinomas are the most common form of cancer.. PARP inhibitors, which are particularly effective in BRCA-mutated tumors, are being tested in preclinical models.
Local ablation procedures such as high-intensity focused ultrasoundUltrasound refers to sound waves that are above the hearing threshold of the human ear. In medicine, ultrasound is used for diagnostic imaging procedures to visualize internal organs, tissues, and blood flow. (HIFU), cryotherapy, or photodynamic therapy are being evaluated as minimally invasiveInvasive describes medical procedures or pathogens that enter the body or penetrate tissue. In medicine, invasive procedures can range from minimally invasive techniques to open surgery. alternatives to surgical resection. These techniques could be particularly relevant for patients with localized disease and increased surgical risk.
Translational research approaches are becoming increasingly important. CanineCanine refers to anything related to dogs. The term is used to describe characteristics, diseases, or specific aspects that specifically affect dogs. prostate carcinomaA carcinoma is a type of cancer that originates in the epithelial cells that line the inner and outer surfaces of the body. Carcinomas are the most common form of cancer. has remarkable similarities to aggressive, androgen-independent prostate carcinomaA carcinoma is a type of cancer that originates in the epithelial cells that line the inner and outer surfaces of the body. Carcinomas are the most common form of cancer. in humans and could therefore serve as a natural model for this difficult-to-treat disease. Comparative studies that examine molecular and clinical aspects in dogs and humans in parallel could lead to new insights for both species.
The integration of artificial intelligence and machine learning into diagnostics and therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. planning represents another promising area of research. Algorithms for analyzing histopathologicalHistopathological refers to the microscopic examination of tissue samples for the diagnosis of diseases. This technique is used to identify the specific characteristics of diseases at the cellular level in dogs and cats. images or for predicting therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions. response are being developed and could support clinical decision-making in the future.
Despite these promising developments, challenges remain. The rarity of the disease makes it difficult to conduct large clinical trials, and the transferability of preclinical results into clinical practice must be carefully evaluated. Multicenter collaborations and the establishment of biobanks and registries could help to overcome these hurdles and accelerate progress in research and therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions..
Frequently asked questions (FAQs)
1. What is Meant by Prostatic Adenocarcinoma in Dogs?
This is a malignantMalignant means "cancerous" and is used to describe tumors or neoplasms that grow invasively and have the ability to metastasize. Malignant tumors can cause serious health problems in dogs and cats. tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. in the prostate gland of male dogs that originates from glandular cells. According to Withrow & MacEwen’s Small Animal Clinical OncologyOncology is the branch of medicine that deals with the diagnosis, treatment, and research of cancer. In veterinary medicine, this includes the treatment of cancers in animals., prostate carcinomas are rare but often aggressive.
2. What Signs Indicate Prostate Cancer in Dogs?
Problems with urination or defecation, blood in the urine, chronicChronic refers to a condition or disease that is long-lasting or permanent. Chronic diseases often develop slowly and can lead to persistent or recurring health problems over time. hind limb weakness, or pain in the lumbar region may be indications. petsvetcheck.de emphasizes that increased licking of the genital region or unusual changes in posture may also be noticeable.
3. How is the Diagnosis Made?
- RectalRectal refers to anything involving the rectum, including administering medication or performing examinations via the anus. palpationPalpation is an examination method in which the condition of body tissues is assessed by feeling them with the hands. It is used to identify swelling, pain, or other abnormalities.: First indicationIndication refers to a valid reason or rationale for using a specific treatment, medication, or medical procedure. It is based on the diagnosis and the patient's clinical condition. of an enlarged or irregular prostate.
- Imaging diagnostics: UltrasoundUltrasound refers to sound waves that are above the hearing threshold of the human ear. In medicine, ultrasound is used for diagnostic imaging procedures to visualize internal organs, tissues, and blood flow., X-rayX-ray is an imaging technique that uses X-rays to create images of the inside of the body. It is often used to diagnose bone fractures, lung diseases, and other conditions., CT/MRI.
- Tissue sampling: Fine needle aspiration or biopsyA biopsy is a medical procedure in which a small amount of tissue is removed from the body to be examined under a microscope for signs of disease. Biopsies can help diagnose cancer and other conditions. to histologically confirm the adenocarcinoma.
The BSAVA Manual of Canine and FelineFeline refers to anything related to cats. The term is used to describe diseases, behaviors, or anatomical aspects that are specific to cats. OncologyOncology is the branch of medicine that deals with the diagnosis, treatment, and research of cancer. In veterinary medicine, this includes the treatment of cancers in animals. also recommends a comprehensive metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. search (chest, abdomenThe abdomen, also known as the abdominal cavity, is the part of the body located between the rib cage and the pelvis. It houses several important organs, including the stomach, liver, kidneys, intestines, and spleen.).
4. What Role Does Castration Play in Prostate Cancer?
While castration prevents benignBenign refers to a non-invasive, non-serious condition that is not life-threatening. In medicine, the term is often used to describe benign tumors that do not metastasize, meaning they do not form secondary tumors. prostatic hyperplasiaHyperplasia refers to an increase in the number of cells in a tissue or organ, leading to enlargement. This can be a normal reaction or a sign of a disease., it does not reliably protect against malignantMalignant means "cancerous" and is used to describe tumors or neoplasms that grow invasively and have the ability to metastasize. Malignant tumors can cause serious health problems in dogs and cats. tumors. Some studies even discuss whether neutered male dogs may have a higher risk of developing certain prostate tumors. However, the data is not conclusive.
5. What Treatment Methods are Available?
- Radical surgery (prostatectomy): In suitable cases.
- Radiation therapyRadiation therapy is the use of radiation, most often to treat cancer. It can be used to kill cancer cells or slow their growth without significantly damaging surrounding healthy tissue.: especially for locally advanced tumors.
- ChemotherapyChemotherapy refers to the treatment of diseases, especially cancer, with chemical substances or drugs. It aims to kill cancer cells or prevent their growth, but can also affect healthy cells.: as a supplement or palliativePalliative refers to treatments that aim to alleviate the symptoms of a disease without curing the disease itself. Palliative care focuses on improving the quality of life of patients with incurable diseases. measure for advanced disease.
Newer research is concerned with targeted therapies (e.g. tyrosine kinase inhibitors).
6. Is a Cure Possible?
A complete cure is only possible in rare cases and with very early diagnosis. In most cases, the tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. can be controlled, but not completely eliminated. According to Slatter’s Textbook of Small Animal Surgery, a lot depends on the tumor stage and metastasis.
7. What is the Risk of Metastasis?
The risk of metastasisA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. (primarily in bones, lungs, and lymph nodes) is comparatively high in prostate carcinomas. Therefore, regular follow-up examinations (e.g. lung X-rays, lymph node check) are important.
8. What is the Prognosis for a Dog with Prostate Cancer?
The prognosisThe prognosis is the prediction of the likely course and outcome of a disease based on the general state of health, the nature of the disease, and the response to treatment. It can provide information on how a disease is expected to develop. is generally guarded. However, with early detection and consistent therapyTherapy refers to the treatment of diseases or disorders with the aim of alleviating symptoms, promoting healing, or improving quality of life. Therapies can be medicinal, surgical, or through other medical interventions., the dog can still live for several months to over a year with a good quality of life. The later the tumorA tumor is an abnormal growth of tissue that can be benign or malignant. Tumors can develop in any part of the body and affect various functions. is discovered, the lower the chances of success.
9. What Aftercare is Recommended?
- Check-up examinations: approximately every 3–6 months.
- Pain management: Important if metastasesA metastasis is a secondary tumor that originates from a primary, malignant tumor in another part of the body. Metastases indicate that cancer has spread in the body. form in the bone.
- PhysiotherapyVeterinary physiotherapy encompasses a range of treatment methods aimed at improving the mobility and well-being of animals through exercise, massage, and other manual techniques./Supportive measures: As needed to maintain mobility and well-being.
10. How Can I Improve My Dog’s Quality of Life?
A low-stress environment, adapted exercise, and need-based pain relievers or medications to improve bladder and bowel passage are crucial. Regular veterinary check-ups ensure early intervention in the event of possible complications (e.g. urinary retention).
When to visit the vet?
Non-urgent see a veterinarian within 2–3 days
If the condition worsens / symptoms persist, consult a veterinarian.