Bronchiectasis is caused by an infection or other condition that injures the walls of the airways or prevents the airways from clearing mucus. Mucus helps remove inhaled dust, bacteria, and other small particles from the airways.
In bronchiectasis, your airways slowly lose their ability to clear out mucus. The mucus builds up and bacteria begin to grow. This leads to repeated, serious lung infections.
Bronchiectasis is caused by an infection or other condition that injures the walls of the airways or prevents the airways from clearing mucus. People with bronchiectasis may produce frequent green/yellow sputum, sometimes with blood also. However, it is possible to have "dry bronchiectasis" in which there is no sputum production. People with bronchiectasis may have bad breath indicative of active infection. Frequent bronchial infections and breathlessness are two possible indicators of bronchiectasis.
The diagnosis of bronchiectasis is based on the review of clinical history and characteristic patterns in CT scan of the Chest.