目的　在普通CT机薄层扫描图像中研究小肺癌的CT征象。方法　采用病灶 3mm憋气扫描法 ,对 3 6例得到病理证实的小肺癌进行CT征象分析。结果　周围型小肺癌的CT征象有 :分叶征 ,占 91.6% ;边缘毛刺征 ,占 77.8% ;空泡征 ,占 5 0 % ;胸膜凹陷征 ,占 88.9% ;蜂窝征 ,占 11.1% ;病灶胸膜侧放射影 ,占 11.1% ;空洞 ,占 2 .7% ;血管集束征 ,占 66.7%。结论　在周围型小肺癌的诊断上 ,可将CT征象分为基本CT征象和次要CT征象。其基本CT征象有 :分叶征、边缘毛刺征、空泡征、胸膜凹陷征和血管集束征 ,各不同组织类型的小肺癌具有的CT征象也不完全一致 Objective To study the CT signs of small lung cancer in the common CT scanner. Methods 3mm breath-hold scanning was used to analyze CT findings of 36 small pathological lung cancer patients. Results CT findings of peripheral small lung cancer were: lobular sign, accounting for 91.6%; marginal burr sign, accounting for 77.8%; vacuole sign, accounting for 50%; pleural recess sign, accounting for 88.9%; honeycomb sign, accounting for 11.1% Focal pleural radiography, accounting for 11.1%; empty, accounting for 2.7%; vascular bundle sign, accounting for 66.7%. Conclusion In the diagnosis of small peripheral lung cancer, CT signs can be divided into basic CT signs and secondary CT signs. The basic CT signs are: lobulation sign, edge burr sign, vacuole sign, pleural indentation and vascular bundles sign, all kinds of small lung cancer with CT signs are not exactly the same