目的:对其它检查方法不能作出定性诊断的中心型肺肿瘤进行超声引导穿刺活检,探讨该方法对中心型肺癌的诊断价值。资料:经X、CT或纤维镜等疑诊或未能确诊的33例及常规超声检查发现肺中心型肿瘤者4例,共计37例为本文对象,男性22例,女性15例,年龄29～81岁。方法:首先通过实变肺行超声检查确认肿瘤,并设定穿刺线路。 OBJECTIVE: To evaluate the diagnostic value of this method for central lung cancer by ultrasound-guided biopsy of central lung tumors that can not be diagnosed qualitatively by other examination methods. MATERIALS: Totally 33 cases were diagnosed as suspected or not diagnosed by X, CT or fibroscope and 4 cases of pulmonary center tumor by conventional ultrasonography. A total of 37 cases were included in this study. There were 22 males and 15 females, aged 29 ~ 81 years old. Methods: First confirm the tumor by solid line ultrasound and set the puncture line.