Home » Diseases » In cats » Pulmonary Calcifications (Calcium Deposits in the Lungs)

Pulmonary Calcifications (Calcium Deposits in the Lungs) in cats

Occurrence: common
Location of illness: Chest

Author: Dr. med. vet. Gisa Löwe | Last modified: 17.02.2026

When to visit the vet?

Non-urgent see a veterinarian within 2–3 days

If the condition worsens / symptoms persist, consult a veterinarian.

Definition

PulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications in cats are pathologicalPathological refers to anything related to diseases or their processes. Pathological changes are those that deviate from the normal structure or function and indicate a disease. calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. deposits in the lung tissue. These calcifications can impair normal lung function and lead to respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. distress.

The most important facts at a glance

Pulmonary calcifications in cats are calcium deposits in the lung tissue that impair the flexibility of the lungs and make breathing difficult. These calcifications can be caused by systemic hypercalcemia, in which the calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. level in the blood is elevated, or by local tissue damage due to inflammatory conditions or infections. Common symptoms include increased respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. rate, shortness of breath, and reduced exercise tolerance. Bluish mucous membranes may also occur rarely. 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. is made through clinical examinations, X-rays, and blood tests to check calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. levels. A 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. may be necessary in difficult cases. Treatment depends on the cause and may include surgery, drug therapies, or symptomatic treatments such as oxygen administration. 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. varies depending on the cause 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 the disease. Preventative measures include regular health checks, a balanced diet, and a clean environment. Research focuses on causes, diagnostics, and new treatment methods, including genetic factors and imaging techniques, to develop personalized therapies.

Causes

The lung is a crucial organ for the exchange of oxygen and carbon dioxide. A normal lung is flexible and allows for efficient breathing. Calcifications impair this flexibility because they harden the lung tissue.

CalciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. is an essential mineral in the body needed for many physiological processes. Under certain conditions, calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. can be deposited in soft tissues, leading to calcifications. This can be due to a disturbed calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. metabolism or local tissue damage.

One of the main causes of pulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications is systemic hypercalcemia, a condition of elevated calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. concentrations in the blood. This can be caused by various diseases, including hyperparathyroidism, vitaminVitamins are organic compounds that are necessary in small amounts for the normal growth, development, and physiological function of the body. Vitamins must mostly be obtained through food, as the body cannot produce them or not in sufficient quantities. D intoxication / poisoningIntoxication / poisoning refers to poisoning caused by the intake of toxic substances. This can be caused by medications, drugs, chemicals, or other poisons and often requires medical treatment., or certain types of 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..

Local tissue damage, such as that caused by chronic inflammatory conditions or infections, can also lead to calcifications. The body tends to stabilize damaged tissue with calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction., which can lead to calcification.

Symptoms

Very common symptoms:

Common symptoms:

Cough

Rare symptoms:

Bluish Mucous Membranes (Cyanosis)

The symptoms of pulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications in cats can vary, depending on the extent of the calcification and the underlying cause. Common symptoms are respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. distress caused by the reduced lung volume and decreased flexibility of the lung tissue.

Affected cats may show an increased respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. rate or shortness of breath, especially with physical exertion. Cough may also be a symptom, although it is less common in cats than in other animals.

In advanced cases, cats may also show weight loss, loss of appetite, and general weakness. These symptoms are often non-specific and may be associated with other diseases, which can make 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. difficult.

Diagnosis

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 pulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications usually begins with a thorough clinical examination and a detailed medical historyThe medical history is the systematic collection of a patient's medical history through questioning. It includes information about previous illnesses, treatments, allergies, and lifestyle habits.. The veterinarian will ask questions about the symptoms, diet, and medical historyThe medical history is the systematic collection of a patient's medical history through questioning. It includes information about previous illnesses, treatments, allergies, and lifestyle habits. of the cat.

Chest X-rays are an important diagnostic tool to identify calcifications in the lung tissue. On X-rays, calcifications appear as well-defined, bright areas. 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. can also be helpful in determining the extent and exact location of the calcifications.

Blood tests are crucial to identify systemic causes such as hypercalcemia. The veterinarian can measure the calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. level in the blood as well as other relevant parameters such as phosphate and vitaminVitamins are organic compounds that are necessary in small amounts for the normal growth, development, and physiological function of the body. Vitamins must mostly be obtained through food, as the body cannot produce them or not in sufficient quantities. D levels.

In some cases, a 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. of the lung tissue may be necessary to confirm 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. and rule out other conditions. This procedure is 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. and is usually only performed if other diagnostic methods do not provide clear results.

Therapy

The treatment of pulmonary calcifications in cats depends on the underlying cause. If the calcifications are caused by systemic hypercalcemia, the treatment is aimed at normalizing the calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. level in the blood.

In the case of hyperparathyroidism, surgical removal of the affected parathyroid gland may be necessary. In the case of vitaminVitamins are organic compounds that are necessary in small amounts for the normal growth, development, and physiological function of the body. Vitamins must mostly be obtained through food, as the body cannot produce them or not in sufficient quantities. D intoxication / poisoningIntoxication / poisoning refers to poisoning caused by the intake of toxic substances. This can be caused by medications, drugs, chemicals, or other poisons and often requires medical treatment., immediate treatment is initiated to reduce vitaminVitamins are organic compounds that are necessary in small amounts for the normal growth, development, and physiological function of the body. Vitamins must mostly be obtained through food, as the body cannot produce them or not in sufficient quantities. D intake and normalize calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. levels.

If an 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. or inflammation causes the calcification, the veterinarian will prescribe antibiotics or anti-inflammatory drugsAnti-inflammatory drugs are medications that reduce inflammation. They can be divided into nonsteroidal anti-inflammatory drugs (NSAIDs) and corticosteroids and are used in dogs and cats to reduce Inflammatory conditions and Pain.. In some cases, specific therapies for underlying diseases, such as 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., may also be required.

Symptomatic treatments, such as the administration of oxygen or bronchodilatorsBronchodilators are medications that widen (dilate) the bronchi, thereby making breathing easier. They are typically used to treat respiratory diseases such as asthma and chronic obstructive pulmonary disease (COPD)., may be necessary to facilitate the cat’s breathing. These measures alleviate the symptoms but do not address the cause of the calcifications.

Prognosis and follow-up care

The prognosis for cats with pulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications varies greatly and depends on the cause 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 the disease. With early 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 treatment, especially for reversible causes, 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. can be good.

In cases where the calcifications are far advanced or the underlying cause is not treatable, 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. may be worse. The cat’s quality of life can be significantly impaired, and in some cases, humane euthanasia may be considered.

Regular follow-up examinations are important to monitor 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 and adjust treatment accordingly. The veterinarian will closely monitor the cat’s condition to ensure the best possible quality of life.

Prevention

To prevent pulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications in cats, it is important to have routine health checks performed regularly by the veterinarian. These examinations can help detect underlying diseases early that may lead to calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. deposits in the lungs. A balanced diet also plays a crucial role. Be sure to give your cat high-quality food that contains all the necessary nutrients to strengthen the immune system and promote general health.

In addition, environmental factors should be considered. Avoid exposing your cat to smoke or other pollutants, as these can impair lung function. Provide a clean and safe environment in which your cat lives to minimize the risk of infections or other health problems.

Regular exercise is also important to support your cat’s overall health. Play and physical activity can help strengthen the cardiovascular system and improve lung function. Finally, it is important to minimize 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. in your cat, as 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. 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. can weaken the immune systemThe immune system is the body's defense system against infectious agents such as bacteria, viruses, fungi, and parasites. It comprises a complex network of organs, cells, and molecules that work together to protect the body. and make the cat more susceptible to various diseases.

Outlook on current research

Research on pulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications in cats is an evolving field that focuses on the causes, diagnostic methods, and potential treatment approaches. Previous studies suggest that these calcifications are often associated with systemic diseases such as hypercalcemia 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. kidney disease. Researchers are investigating the extent to which genetic factors may play a role, as certain cat breeds may be more susceptible to these diseases.

Another focus of research is on improving imaging diagnostics. Modern techniques 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. allow for more precise localization and characterization of the calcifications, which can lead to better clinical decision-making. Scientists are also developing new biochemical markers that could help facilitate 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 calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. deposits and monitor disease 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..

Therapeutically, various approaches are currently being investigated. While symptomatic treatments such as diureticsDiuretics are medications that increase urine production in the kidneys to rid the body of excess salt and water. They are often used to treat high blood pressure, heart failure, and certain types of edema. and calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. channel blockers can be helpful in controlling symptoms, research is focused on developing more specific treatments that address the underlying pathophysiological processes. Experimental therapies targeting the modulation of calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. metabolism are showing promising results in preclinical studies.

In the long term, the goal is to develop personalized treatment concepts that are tailored to the individual health status and genetic predispositions of the cat. This includes exploring the role of nutrition and how dietary adjustments can contribute to the preventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. or mitigation of symptoms. As research in this area is still relatively new, larger clinical trials are needed to demonstrate the efficacy and safety of new treatment approaches.

Frequently asked questions (FAQs)

What are pulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications in cats? PulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications are deposits of calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. salts in the lung tissues of cats. These can impair respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. function and are often a sign of an underlying systemic disease.
What symptoms occur in cats with pulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications? The most common symptoms include respiratory distress, cough, reduced activity, and in some cases weight loss. The symptoms can vary depending on the extent of the calcifications.
How are pulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications diagnosed? The diagnosis is usually made by X-rays or more advanced imaging techniques 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.. Blood tests and biopsies may also be necessary to determine the cause of the calcifications.
What causes calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. deposits in the lungs of cats? Common causes include 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. kidney disease, hypercalcemia, infections, inflammatory conditions, or tumors. An accurate 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 treatment.
Can pulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications be treated in cats? The treatment aims to address the underlying cause and alleviate the symptoms. In some cases, medications can be used to lower calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. levels or relieve discomfort.
Is the disease life-threatening for cats? The severity of the disease depends on the extent of the calcifications and the underlying cause. In severe cases, respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. function can be significantly impaired, which can be life-threatening if appropriate treatment is not provided.
Are certain cat breeds more susceptible to pulmonaryPulmonary refers to the lungs or the respiratory system. Pulmonary diseases in dogs and cats include conditions such as Pneumonia, asthma, and pulmonary hypertension. calcifications? Current research suggests that certain breeds may be more susceptible due to genetic predispositions; however, further studies are needed to confirm this.
What preventive measures are there? Regular veterinary examinations and a balanced diet can help reduce the risk of systemic diseases that can lead to calcifications. Good kidney function and a stable calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. balance are also important.
How can I help my pet if it is affected? It is important to follow the veterinarian’s instructions, attend regular check-ups, and consistently carry out the recommended 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.. A stress-free environment and the adaptation of activities can also be helpful.
Are there new treatment methods in development? Yes, research is working on new approaches that target the causes of calcifications, including modulations of calciumCalcium is a mineral that is essential for building and maintaining strong bones and teeth. It also plays a role in blood coagulation, nerve transmission, and muscle contraction. metabolism and personalized therapies that are specifically tailored to the needs of the affected cat.

Frequently asked questions (FAQs)

1. What are pulmonary calcifications in cats?

Pulmonary calcifications are deposits of calcium salts in the lung tissues of cats. These can impair respiratory function and are often a sign of an underlying systemic disease.

2. What symptoms occur in cats with pulmonary calcifications?

The most common symptoms include respiratory distress, cough, reduced activity, and in some cases weight loss. The symptoms can vary depending on the extent of the calcifications.

3. How are pulmonary calcifications diagnosed?

The diagnosis is usually made by X-rays or more advanced imaging techniques such as computed tomography (CT). Blood tests and biopsies may also be necessary to determine the cause of the calcifications.

4. What causes calcium deposits in the lungs of cats?

Common causes include chronic kidney disease, hypercalcemia, infections, inflammatory conditions, or tumors. An accurate diagnosis is crucial for treatment.

5. Can pulmonary calcifications be treated in cats?

The treatment aims to address the underlying cause and alleviate the symptoms. In some cases, medications can be used to lower calcium levels or relieve discomfort.

6. Is the disease life-threatening for cats?

The severity of the disease depends on the extent of the calcifications and the underlying cause. In severe cases, respiratory function can be significantly impaired, which can be life-threatening if appropriate treatment is not provided.

7. Are certain cat breeds more susceptible to pulmonary calcifications?

Current research suggests that certain breeds may be more susceptible due to genetic predispositions; however, further studies are needed to confirm this.

8. What preventive measures are there?

Regular veterinary examinations and a balanced diet can help reduce the risk of systemic diseases that can lead to calcifications. Good kidney function and a stable calcium balance are also important.

9. How can I help my pet if it is affected?

It is important to follow the veterinarian's instructions, attend regular check-ups, and consistently carry out the recommended therapy. A stress-free environment and the adaptation of activities can also be helpful.

10. Are there new treatment methods in development?

Yes, research is working on new approaches that target the causes of calcifications, including modulations of calcium metabolism and personalized therapies that are specifically tailored to the needs of the affected cat.