硬化性肺泡细胞瘤的CT表现分析

Analysis of CT characteristics of sclerosing pneumocytoma

目的:分析硬化性肺泡细胞瘤(SP)的CT特征。方法:回顾性收集经病理证实的SP 26例,均行胸部CT平扫及增强扫描,分析CT表现,统计贴边血管征、贴边支气管征、晕征、空气新月征的情况。结果:26例共27个病灶CT表现均为肺内类圆形结节或肿块,22.2%(6/27)病灶内可见沙砾状钙化,74.1%(20/27)病灶静脉期均匀强化。贴边血管征、贴边支气管征、晕征、空气新月征分别占70.4%(19/27)、44.4%(12/27)、37.0%(10/27)、22.2%(6/27)。结论:贴边血管征、贴边支气管征提示病灶偏良性,晕征、空气新月征提示病灶周围肺泡内出血及吸收,可作为SP的CT诊断及鉴别诊断的参考。

Objective：To analyze the CT characteristics of sclerosing pneumocytoma （SP）. Methods：The CT plain scan and en- hanced scan data from a total of 26 patients diagnosed pathologically as SP were recruited in retrospective analysis. The CT imag- ing features were analyzed and the welt vessel signs,weh bronchi signs,halo signs,air meniscus signs were recorded. Results： There were 27 lesions with circular nodules or masses in lung in 26 SP cases. The granulated calcification was seen in 22.2% of the lesions and homogeneous enhancement in the venous phase was seen in 74.1% of the lesions. The ratio of welt vessel signs,weh bronchi signs,halo signs,air meniscus signs were 70.4%,44.4%,37.0%,22.2%,respectively. Conclusion：The welt ves- sel sign and welt bronchi sign indicate the lesions benign,the halo sign and air meniscus sign indicate the alveolar hemorrhage and absorption arounding lesions,which could be used as a reference for CT diagnosis and differential diagnosis of SP.