肺周围性肿块常因纤支镜检查阴性或取痰做病理学及病原学检查不能明确病灶的性质，需应用经皮肺穿刺活组织检查（活检）方法来明确诊断。现将ＣＴ引导下经皮肺活检１２例临床资料及结果报道如下。１　临床资料１－１　一般资料　本组１２例，为Ｘ线胸片及肺ＣＴ显示肺周围性肿 Peripheral lumps often due to bronchoscopy negative or sputum do pathological and etiological examination can not determine the nature of the lesion, the need for percutaneous lung biopsy (biopsy) method to confirm the diagnosis. Now CT-guided percutaneous lung biopsy in 12 cases of clinical data and results reported below. 1 Clinical data 1-1 General Information The group of 12 cases, for X-ray and pulmonary CT showed pulmonary perithecia