目的 为了提高诊断SFTP的准确性,本文旨在总结及分析其CT特异征象。方法 回顾性分析内蒙古自治区人民医院15例SFTP患者的临床及影像学资料(手术病理证实),深入研究其CT征象及特点。结果 本组15例患者病灶共计15个。分析15例患者胸部CT征象,瘤体大小3cm~29mm,平均直径约13.5cm；肿瘤于平扫CT呈等或混杂密度结节或肿块,2例体积相对较小的病变,呈均匀软组织密度,增强扫描均匀强化,程度为轻~中度,13例体积相对较大病灶呈混杂密度,增强扫描呈不均匀强化,2例强化程度为轻度,11例位显著强化伴其内多发不强化的坏死及囊变区,9例病灶内见地图样强化及迂曲杂乱肿瘤血管。5例病灶边缘可见胸膜蒂征。肿瘤内见条片状或者块状钙化1例。结论：SFTP的CT平扫及增强表现出“胸膜蒂征”、“地图样强化”及“迂曲杂乱肿瘤血管”对于影像诊断有重要的提示作用,不伴或者很少伴有胸腔积液有助于与其他肺内恶性肿瘤鉴别。

Objective: In order to improve the accuracy of SFTP diagnosis, this paper aims to summarize and analyze its CT characteristics. Methods：15 patients with SFTP who were confirmed by pathology and had complete clinical data between January 2016 and December 2019 were collected and the CT signs were retrospectively analyzed. Results：There were 15 lesions in this group, and the chest CT signs of 15 patients were analyzed. The tumor size was 3cm~29mm, and the average diameter was about 13.5cm. On plain CT scan, the tumors presented equal or mixed density nodules or masses, 2 cases had small lesions with uniform soft tissue density, which showed uniform mild to moderate enhancement on the enhanced image. 13 cases had large lesions with mixed density and presented uneven enhancement, which 2 cases presented mild uneven enhancement and 11 cases presented obvious uneven enhancement with multiple low-density areas (necrosis and cystic degeneration). In addition, 9 patients had geographic enhancement and tortuous tumor blood vessels. Conclusion: CT images of SFTP showed "pleural pedicle sign", "enhanced geomorphic pattern" and "tortuous tumor blood vessels", which were important for diagnostic imaging. The absence or infrequent presence of pleural effusion was helpful in differentiating from Other malignant tumors of the lung.

内蒙古自治区自然科学基金(项目编号：2019LH08002)；内蒙古自治区人民医院院内基金(项目编号：2019YN16)