肺气肿是指终末细支气管远端气道持续性过度膨胀，同时伴有气道壁破坏但无纤维化的病理状态。肺气肿有时合并支气管哮喘以及同为慢性阻塞性肺疾病（ＣＯＰＤ）的慢性支气管炎，按Ｓｎｉｄｅｒ等的关系图（图１），处于４、５、７、８部位者临床上就可诊断为肺气肿。图１慢... Emphysema refers to the persistent over-expansion of the distal airways of the terminal bronchioles, accompanied by destruction of the airway wall but without fibrosis. Emphysema is sometimes associated with bronchial asthma and chronic bronchitis with chronic obstructive pulmonary disease (COPD). According to the Snider et al. (Figure 1), patients in the 4, 5, 7, and 8 positions are clinically diagnosed as Emphysema. Figure 1 slow ...