Understanding Bronchiectasis

Bronchiectasis is a condition in which the airways of the lungs (bronchi and bronchioles) become wider than normal. Over time, the walls of the airways become thick and scarred. The damaged airways can’t clear mucus as well. Because of this, mucus builds up in the airways. This increases the risk for lung infections. Bronchiectasis is a long-term (chronic) condition.

What causes bronchiectasis?

Doctors do not know exactly what causes this condition. It occurs in people with lung infections who have long-term damage to the airways from other health problems.

Smokers and those with long-term lung disease are more likely to develop bronchiectasis. Some of the conditions that increase the chance for bronchiectasis include:

  • Cystic fibrosis

  • Lung infections such as pneumonia, tuberculosis, or whooping cough

  • Chronic obstructive pulmonary disease (COPD)

  • Problems with the body’s defense (immune) system

  • Allergic bronchopulmonary aspergillosis (ABPA)

  • Long-term problem with inhaling food or liquids into the lungs (aspiration)

  • Certain autoimmune diseases such as rheumatoid arthritis

  • Blocked airway, such as from a tumor or inhaled object

  • Lung problems that are present at birth (congenital)

What are the symptoms of bronchiectasis?

Damage to the airways often starts in childhood. You may not have symptoms until months or years after repeated lung infections. Some people have few or no symptoms. Others have daily symptoms that get worse over time. Common symptoms include:

  • Long-term cough

  • Coughing up a lot of thick mucus that may have blood in it

  • Trouble breathing

  • Inflammation of the nose and sinuses (rhinosinusitis)

  • Inflammation of the covering of the lungs (pleurisy or pleuritis)

  • Feeling tired

How is bronchiectasis diagnosed?

Your healthcare provider will ask about your past health and symptoms. You’ll also have a physical exam. This includes listening to your chest with a stethoscope. You may need tests to help with the diagnosis, including:

  • Blood tests. These check for infection, immune system problems, and overall health.

  • Sputum culture. This is a test of the mucus in your lungs. It’s checked for a bacterial or fungal infection.

  • Chest X-ray. This is done to get information about your heart and lungs.

  • Chest CT scan. This gives detailed pictures of your airway. It’s most often used to make the diagnosis.

  • Lung function and exercise tests. They include spirometry and a 6-minute walk test. These tests show how well your lungs work and if you are able to get enough oxygen into your body, even when exerting yourself.