笔者回顾性分析一组接受经皮肺穿活检的病例 ,就气胸发生的影响因素探讨如下。1　材料与方法自 1988年以来 ,对 6 0 0余例肺内实质性病灶的患者 ,因无法明确诊断或需进一步获取病理学诊断而行经皮肺穿活检 ,其中有详细病历记载的 45 0例作为本组研究对象。 45 0例中 ,男性 2 82 The author retrospectively analyzed a group of patients who underwent percutaneous pulmonary biopsy to explore the influencing factors of pneumothorax as follows. 1 Materials and Methods Since 1988, more than 600 cases of pulmonary parenchymal lesions in patients with inability to make a clear diagnosis or need further pathological diagnosis and percutaneous pulmonary biopsy, of which 45 0 cases detailed medical records As the research object of this group. 45 0 cases, men 2 82