肺大泡有先天性和后天性两种。前者多见于小儿,又称“先天性大泡性肺气肿”。临床上大多为后天性,多继发于慢性支气管炎及肺气肿,常常由于细支气管炎症、水肿,形成局部阻塞性活瓣机制,远端肺泡腔不断增大,泡内压增高,终至肺泡间隔断裂融合成一个大气泡。 Bullae have congenital and acquired two kinds of. The former is more common in children, also known as “congenital bullous emphysema.” Most of the clinical acquired, mostly secondary to chronic bronchitis and emphysema, often due to bronchial inflammation, edema, the formation of local obstructive valve mechanism, the distal alveolar cavity is growing, the bubble pressure increased, and finally Alveolar septal rupture fuse into a large bubble.