Overview of bronchiectasis 1. What is meant by bronchiectasis? What is the cause of the disease? Bronchiectasis is a chronic lung and bronchial infectious disease. It is caused by long-term recurrent respiratory infections and bronchial obstruction, resulting in infection of the bronchial wall, destruction of the muscle layer and elastic fiber tissue of the wall, and substitution of fibrous connective tissue, resulting in stiffening of the bronchial wall and dilatation of the lumen, which is difficult to recover from such pathological changes. Therefore, surgical resection of the diseased lung tissue is often required for radical treatment. 2.What are the risks of bronchiectasis? Patients often have recurrent lung infections, large amount of pus sputum, hemoptysis and other symptoms. In severe cases, it can cause respiratory impairment and even loss of labor force.