目的 探讨肺肉瘤样癌多层螺旋 CT影像学特征。方法 选取我院2014年5 月-2015年12月我院收治的肺肉瘤样癌患 者21例，另收集同时期非肺肉瘤样癌患 者20例，整理两组患者影像学资料及临床 资料，分析肺肉瘤样癌患者CT扫描图像表 现，总结肺肉瘤样癌在多层螺旋CT扫描中 的影像学特征。结果 21例肺肉瘤样癌患 者中，95.23%(20/21)患者为单发病灶， 肿瘤分布以周围型常见，呈现类圆形或团 块状；肿瘤直径均>4.0cm；MSCT图像中均 呈现囊变坏死，囊变部分面积较大，边缘 常见不同于毛刺征的棘突征，其肿块内容 易出现空洞或不规则含气腔隙；其强化值 仅为(31.00±7.66)Hu，明显低于非肺肉 瘤样癌组(54.11±7.81)Hu，数据差异具 有统计学意义(P<0.05)。结论 肺肉瘤样 癌MSCT扫描图像具有一定的特征。多层螺 旋CT检查有助于鉴别肺肉瘤样癌与非肉瘤 样肺癌，对肺肉瘤样癌的明确诊断以及为 临床治疗方案的选择提供影像学资料。

Objective To investigate the multi-slice spiral CT imaging features of sarcomatoid carcinoma of the lung. Methods 21 patients with sarcomatoid carcinoma of lung in our hospital May 2014 to December 2015 were selected, at the same time 20 cases of non sarcomatoid lung from cancer were collected, the imaging data and clinical data of two groups of patients were analyzed and the CT scan images of patients with sarcomatoid carcinoma of lung were analyzed. The imaging features of pulmonary sarcomatoid carcinoma in multi-slice spiral CT scan were summarized. Results 21 patients with sarcomatoid carcinoma, 95.23% (20/21) were solitary lesions, the distribution of tumor is common in peripheral area, circular or agglomerate; the diameter of tumor was >4.0cm, MSCT images showed cystic necrosis, the cystic area is larger, the common spinous process sign is different from burr sign, there is a cavity or irregular air space in its mass; the enhancement value was only(31.00±7.66)Hu, Significantly lower than non sarcomatoid lung cancer(54.11±7.81)Hu. The data difference was statistically significant(P<0.05). Conclusion The MSCT scan of sarcomatoid carcinoma of lung has certain characteristics. Multi-slice spiral CT is helpful in differentiating lung sarcomatoid carcinoma from non sarcomatoid lung cancer, definitive diagnosis of sarcomatoid carcinoma of the lung and imaging data for clinical treatment options.