肺肉瘤样癌的CT表现  

CT Findings of Pulmonary Sarcomatoid Carcinoma

作　　者：周和秀[1] 陈燕萍[1] 卢晓丹[1] 吴芹[1] 徐嬿[1] 刘彩霞[1] 

机构地区：[1]南方医科大学南方医院影像中心,广州510515

出　　处：《临床放射学杂志》2012年第7期961-964,共4页Journal of Clinical Radiology

摘　　要：目的分析7例经病理证实的肺肉瘤样癌(PSC)的CT表现与临床资料,以提高对该病的认识。方法回顾性分析7例PSC的CT表现,所有病例均行CT平扫及增强扫描,分析病灶发生的部位、形态、强化形式与周围侵犯及转移等。结果 7例PSC均为单发,左肺4例,右肺3例;6例为周围型,1例为中央型。病灶平扫为软组织密度,其中6例密度不均匀,可见片状低密度坏死区;增强扫描5例呈厚环状强化,1例呈片絮状强化,1例病灶较小呈轻度均匀强化。所有病例免疫组织化学见CK(+)与Vim(+)。结论 PSC CT表现有一定的特点,周围型常表现为较大的肿块,易侵犯胸壁,增强扫描多呈厚环状强化,病灶常可见片状低密度坏死区,确诊需依靠病理学检查。Objective To discuss CT features and clinical data of pulmonary sarcomatoid carcinoma so as to improve its recognition. Methods CT findings of 7 cases with pulmonary sarcomatoid carcinoma were retrospectively analyzed,inclu- ding the location, contour, contrast enhancement pattern, surrounding invasion and metastasis. All the patients received CT plain scanning and enhanced CT scanning. Results All the 7 cases had single mass： 4 in left lung, 3 in right lung; 6 were peripheral type, 1 was central type. The plain CT showed soft tissue mass with uneven density. 6 of them had hetero- geneous enhancement with weak or unremarkable enhancement at central area. 5 cases showed thick ring enhancement, 1 case showed lamellar and floccular enhancement, only one small lesion demonstrated mild homogeneous enhancement. On immunohistochemical examination, CK and Vim are positive in all the 7 cases. Conclusion There are certain CT charac- teristics in lung sarcomatoid carcinoma. The peripheral types always show large masses and heterogeneous ring enhancement with central patchy necrosis. However, definite diagnosis depends on pathology.

关 键 词：肺 肉瘤样癌 体层摄影术 X线计算机 病理 

分 类 号：R734.2[医药卫生—肿瘤]