慢性气管炎,由于病程长,在反复发作数年之后,并发肺气肿,这是累见不鲜的事情。近年来国内对慢性气管炎整个气管树的病变已有较说尽的研究(1)(2),但是对于慢性气管炎如何引起肺气肿的资料不多,为了认识慢性气管炎与肺气肿的内在联系,及肺气肿不同类型的发生机制,作了一些探讨。我们所用的病案是从第一部分材料中选择临床和病理都诊断为慢性气管炎、肺气肿和肺 Chronic bronchitis, due to a long course of disease, repeated episodes of several years later, complicated by emphysema, which is not uncommon business. In recent years, the domestic chronic tracheitis, the entire tracheal tree lesions have been more exhaustive study (1) (2), but for the information on how to cause emphysema in chronic bronchitis is not much, in order to understand the chronic bronchitis and emphysema The internal relations, and different types of emphysema occurred mechanism, made some discussion. The medical records we used were selected from the first part of the clinical and pathological diagnosis of chronic bronchitis, emphysema and lung