Obstructive emphysema

Obstructive pulmonary emphysema refers to the persistent expansion and expansion of the distal balloon bronchi distal balloon cavity (including respiratory bronchioles, alveolar ducts, alveolar sacs, and alveoli), with the structure of the air cavity wall destroyed without Obvious fibrosis is a disease with pathological features. Chronic bronchitis is mostly caused by long-term smoking, air pollution, inhalation of harmful chemicals and dust, and chronic recurrent respiratory infections, which further develop the disease.