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Bronchiectasis (Bronchial Outpouchings) in Dogs

Occurrence: common
Location of illness: Chest

Author: Dr. med. vet. Gisa Löwe | Last modified: 06.11.2025

Bronchiectasis in dogs involves permanent widening or outpouching of the bronchi, resulting from 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 or infections. These abnormalities lead to impaired lung function and can cause severe 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

Bronchiectasis in dogs is characterized by permanent dilationDilation refers to the widening or expansion of a hollow organ or vessel. It can be physiological (normal) or pathological (due to disease). of the bronchi, caused by 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 and infections in the airways. These structural changes weaken the tissue and lead to symptoms such as Cough, nasalNasal refers to the nose and nasal cavities. In veterinary medicine, this can involve examinations, treatments, or diseases affecting the nose of dogs and cats. discharge, respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. distress, and 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. The main causes include recurrentRecurrent refers to a disease that repeatedly returns or worsens after a temporary remission or improvement. bacterial infections, genetic predispositions, and damage from foreign bodies or toxicToxic means "poisonous" and refers to substances that can have harmful effects on the body, including damage to organs, cells, or disruption of metabolic processes. fumes. Some breeds, such as Cocker Spaniels and West Highland White Terriers, are particularly susceptible.

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 and imaging procedures such as X-rays and CT scans to detect bronchial dilationDilation refers to the widening or expansion of a hollow organ or vessel. It can be physiological (normal) or pathological (due to disease).. Treatment options include antibiotics to combat infections, 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., and 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). to facilitate breathing. In severe cases, surgical removal of affected bronchi may be necessary. SupportiveSupportive refers to supportive treatments that aim to alleviate symptoms and improve quality of life without directly treating the underlying cause of the disease. care, including good nutrition and physical 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 also important.

PreventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. focuses on minimizing risk factors through regular veterinary examinations, a healthy environment, and the management of genetically determined risks. Research aims to identify genetic predispositions and improve diagnostic and therapeutic methods. The use of stem cell therapies to regenerate damaged airways is also being investigated, although these approaches are still in research.

Causes

Bronchi are part of a dog’s respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. system, acting as tubes that transport air from the tracheaThe trachea, or windpipe, is a tubular organ that carries air from the upper respiratory tract to the bronchi in the lungs. It consists of ring-shaped pieces of cartilage that ensure it remains open. to the lungs. In bronchiectasis, structural changes occur, mainly caused by inflammatory conditions in the airways. These inflammatory conditions can weaken the bronchial tissue, leading to permanent dilationDilation refers to the widening or expansion of a hollow organ or vessel. It can be physiological (normal) or pathological (due to disease)..

The main cause of bronchiectasis is a 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. or recurrentRecurrent refers to a disease that repeatedly returns or worsens after a temporary remission or improvement. respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. 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.. Bacterial infections, such as those caused by Bordetella bronchiseptica or Mycoplasma, are common triggers. These infections can damage the tissue and overwhelm the body’s 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., leading to 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. inflammation.

In addition to infections, other factors can contribute to the development of bronchiectasis. Congenital issues, such as defects in ciliaCilia are fine, hair-like structures found on the surface of cells. They move rhythmically to move fluids across the cell surface or to propel the cell itself. function, which normally help remove mucus and foreign particles from the airways, can play a role. Inhaled foreign bodies or toxicToxic means "poisonous" and refers to substances that can have harmful effects on the body, including damage to organs, cells, or disruption of metabolic processes. fumes can also damage the bronchi, leading to their dilation.

Another important factor is 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.. Some dog breeds are more susceptible to respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. diseases, which increases the risk of developing bronchiectasis. For example, Cocker Spaniels and West Highland White Terriers are more commonly affected.

Symptoms

Very common symptoms:

Common symptoms:

Rare symptoms:

Dogs with bronchiectasis often show symptoms associated with respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. diseases. A common symptom is 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. cough, which is caused by the accumulation of mucus and the inflammation of the bronchi. The cough may be productive, meaning it may produce mucus or pus.

Other symptoms include respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. distress and Panting, especially after exertion. Dogs may also develop a crackling breathing sound caused by the narrowed airways. In severe cases, cyanosisCyanosis refers to a bluish discoloration of the skin and mucous membranes, caused by an inadequate oxygen supply to the blood. It can be a sign of heart, lung, or blood diseases. may occur, a bluish discoloration of the skin and mucous membranes, indicating a lack of oxygen.

In addition, affected dogs may be lethargic and show a decreased appetite. Weight loss is also a common sign, as the constant energy expenditure for breathing and the possible impairment of food intake put a strain on the body.

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 bronchiectasis in dogs requires a thorough clinical examination and the use of imaging techniques. Chest X-rays are often the first step in detecting structural changes in the lungs. These images may show thickened bronchial walls and the presence of fluids.

A 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. scan of the chest provides a more detailed view and can help confirm the diagnosis. CT scans are particularly useful in assessing the extent of bronchial dilationDilation refers to the widening or expansion of a hollow organ or vessel. It can be physiological (normal) or pathological (due to disease). and the severity of the disease.

In addition, bronchoscopyBronchoscopy is a diagnostic and therapeutic procedure in which the inside of the airways is directly viewed with a bronchoscope, a thin, flexible viewing tube. It can be used to take tissue samples or remove foreign objects. and bronchoalveolar lavageBronchoalveolar lavage is a medical procedure in which a portion of the lung is rinsed with a small amount of sterile fluid to collect cells and other components for diagnostic purposes. It is often used to make a diagnosis of lung diseases. can be performed. These procedures allow direct visualization of the bronchi and the collection of samples to determine the type of 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. Culture and cytology of the lavageLavage is a rinsing procedure that uses a liquid to clean a body cavity, organ, or wound. In veterinary medicine, lavage can be used, for example, for gastric lavage or to clean an infected wound. fluid can provide clues to specific pathogens or inflammatory cells.

Therapy

The treatment of bronchiectasis in dogs aims to alleviate symptoms and combat the underlying causes. Antibiotics are often necessary to treat bacterial infections. The selectionSelection refers to the process of natural or artificial selection of specific individuals for reproduction, based on desired genetic traits. In breeding, this is applied to promote specific characteristics in dogs and cats. of the appropriate antibiotic is often based on the results of culture tests to target the specific bacteriaBacteria are microscopic, single-celled organisms that exist in almost every environment on Earth. Some types of bacteria are beneficial or even essential to life, while others can cause disease..

Additionally, 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. may be prescribed to reduce bronchial inflammation. These medications help reduce swelling and irritation of the airways, which facilitates breathing.

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). can also be used to dilate the airways and improve breathing. These medications help relax the smooth muscles of the bronchi and increase airflow.

In severe cases, surgical removal of the affected bronchi may be considered. However, this is an invasive procedure and is only recommended for dogs with localized and severe lesions.

SupportiveSupportive refers to supportive treatments that aim to alleviate symptoms and improve quality of life without directly treating the underlying cause of the disease. care, including ensuring good hydration and nutrition, is also important. Physical 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 breathing exercises can help mobilize mucus and improve lung function.

Prognosis and follow-up care

The prognosis for dogs with bronchiectasis depends on the severity of the disease and the response to treatment. 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 appropriate treatment, many dogs can maintain a good quality of life. However, chronic cases or those with severe complications may have a poorer prognosis.

Dogs that respond to treatment and in whom the underlying cause can be controlled typically have a better 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.. However, it is important to understand the condition as a 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. condition that requires long-term care and management.

Prevention

PreventionPrevention includes measures taken to prevent diseases or injuries. In veterinary medicine, this includes vaccinations, parasite control, and health monitoring. of bronchiectasis in dogs focuses on minimizing risk factors and maintaining good respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. health. Regular veterinary examinations are important to detect and treat respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. diseases early.

Avoiding smoking near dogs and reducing 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 and pollutants can reduce the risk of respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. damage. A healthy diet and regular exercise also contribute to overall health and 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. resilience.

For dogs that are genetically susceptible to respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. diseases, special precautions may be necessary. This may include avoiding stressors and managing allergies that can triggerA trigger is a stimulus that elicits a specific reaction or state. In veterinary medicine, this can refer to emotional responses, such as fear or aggression, or medical conditions, such as seizures in dogs and cats. airway inflammation.

Outlook on current research

Bronchiectasis in dogs is a relatively rare but serious condition characterized by permanent dilation and damage to the bronchi. This condition can be caused by repeated infections, chronic inflammatory conditions, or other damage to the airways. Current research has a strong focus on identifying genetic predispositions and developing more targeted diagnostic methods. Scientists are investigating whether certain dog breeds are more susceptible to bronchiectasis due to genetic factors and are trying to identify the underlying genetic markers.

Another area of research focuses on improving diagnostic procedures. Currently, 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 often made by imaging techniques such as X-rays and 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.. Researchers are working on developing 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 that could allow earlier, more accurate diagnoses. Advances in imaging technology and the use of biomarkers in the blood or other bodily fluids promise to improve 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 bronchiectasis in the future.

In addition to 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., intensive research is also being conducted on 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.. Traditionally, treatment focuses on relieving symptoms, fighting infections, and improving the quality of life of the affected dog. New therapies, including targeted drugs that specifically target the inflammatory processes in the airways, are currently being explored. In addition, research is investigating the role of anti-inflammatory and mucolytic (mucus-dissolving) drugs to improve 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 quality of life for affected animals.

Another exciting area of research is regenerative medicine. Scientists are exploring the possibility of repairing damaged airways through stem cell 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.. 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 have shown that stem cells have the potential to regenerate damaged tissue and reduce inflammation. However, these approaches are still in an early stage and require further research and clinical trials before they can be routinely used.

Finally, the role of the environment in the development of bronchiectasis is also being investigated. Studies focus on how environmental factors such as air pollution or passive smoking can contribute to the development of this disease. The goal is to develop preventive measures to reduce the risk of developing bronchiectasis in dogs.

Frequently asked questions (FAQs)

What are the most common symptoms of bronchiectasis in dogs? The most common symptoms 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. cough, respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. distress, Panting, and recurrentRecurrent refers to a disease that repeatedly returns or worsens after a temporary remission or improvement. respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. infections. Sometimes nasalNasal refers to the nose and nasal cavities. In veterinary medicine, this can involve examinations, treatments, or diseases affecting the nose of dogs and cats. discharge or a crackling breathing sound can also be observed.
How is bronchiectasis diagnosed in dogs? 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 usually made through a combination of clinical examination, X-rays, and 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.. These imaging procedures help to visualize the characteristic changes in the bronchi.
Can bronchiectasis be cured in dogs? A complete cure is rare, as the structural changes in the bronchi are often irreversible. Treatment aims to alleviate symptoms and improve quality of life.
What treatment options are available for dogs with bronchiectasis? Treatment typically includes administering antibiotics to combat infections, 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., and expectorants. Physical 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. can also be helpful to promote mucus removal.
Are certain dog breeds more susceptible to bronchiectasis? Yes, some dog breeds appear to be more susceptible due to genetic factors. Studies suggest that certain breeds such as the West Highland White Terrier and the Cocker Spaniel are more commonly affected.
How can I help my dog with bronchiectasis at home? Good home care includes avoiding 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. and exertion, ensuring a smoke-free environment, regular exercise, and a balanced diet. Regular check-ups with the veterinarian are also important.
Can my dog lead a normal life despite bronchiectasis? With the right treatment and care, many dogs with bronchiectasis can lead a relatively normal and happy life. However, regular veterinary care is crucial to avoid complications.
How common is bronchiectasis in dogs? Bronchiectasis is relatively rare in dogs compared to other respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. diseases. The exact frequency is difficult to determine because the disease is often underdiagnosed.
Can my dog’s diet affect bronchiectasis? A balanced diet can strengthen 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 promote general health, which can indirectly help control symptoms. However, specific dietary measures for the direct treatment of bronchiectasis are not known.
Are there preventive measures against bronchiectasis in dogs? Preventive measures include avoiding environmental factors that could irritate the airways, such as smoke or heavy air pollution. Regular veterinary check-ups and vaccinations can also help reduce the risk of respiratoryRespiratory refers to breathing or the process of breathing. Respiratory diseases affect the respiratory tract and can impair the ability to breathe effectively. infections that could lead to bronchiectasis.