目的分析周围型小肺癌的CT征象特征,提高CT对周围型小肺癌的CT诊断水平。方法收集60例经手术穿刺癌栓等病理证实的周围型小肺癌,对其内部结构、边缘形态、周围组织改变及增强后的CT表现进行回顾性分析。结果60例周围型小肺癌中具有空泡征2例,细支气管充气征1例,空洞1例,钙化1例,具有深/浅分叶征51例,短细毛刺征和棘突征47例;具有血管集束征36例,胸膜凹陷征53例,癌肿胸膜侧阻塞改变6例;39例进行了增强扫描,癌体均有强化、强化幅度超过40Hu。结论CT特别是靶区HRCT扫描及靶区增强CT扫描可以提高对周围型小肺癌的影像诊断准确率。 Objective To analyze the CT features of peripheral small lung cancer and improve the CT diagnosis of peripheral small lung cancer. Methods Sixty cases of peripheral small lung carcinoma confirmed by histopathology, including tumor thrombus, were collected. Retrospective analysis was made on the internal structure, marginal morphology, the changes of the surrounding tissues and the CT findings. Results 60 cases of peripheral small lung cancer with vacuolar sign in 2 cases, bronchial airway sign in 1 case, cavity in 1 case, calcification in 1 case, with deep / shallow lobes sign in 51 cases, short spiculation and spina bifida in 47 cases ; There were 36 cases of vascular bundles sign, 53 cases of pleural indentation and 6 cases of pleural obstruction of the cancer. Thirty-nine cases underwent enhanced scanning and the cancerous bodies were strengthened and the intensification range exceeded 40 Hu. Conclusion CT, especially the target area HRCT scan and target enhanced CT scan can improve the imaging diagnostic accuracy of peripheral small lung cancer.