肺不张常为肿瘤、炎症、结核、外伤、手术等胸肺疾病的并发症。常规Ｘ线检查只能对其做形态、部位、范围的诊断,而不能做病因诊断,更无治疗意义。我们用纤维支气管镜(简称纤支镜)在肺不张病因诊断及某些病例的治疗中取得了较好的效果,现分析如下。1　临床资料1.1　病例选择　69 Atelectasis often tumor, inflammation, tuberculosis, trauma, surgery and other complications of chest and lung disease. Routine X-ray examination can only do its shape, location, range of diagnosis, but can not do etiological diagnosis, but no treatment significance. We use fiber bronchoscopy (bronchoscopy) in the diagnosis of atelectasis and the treatment of some cases have achieved good results, are analyzed as follows. 1 clinical data 1.1 case selection 69