侵袭性胸腺瘤与非侵袭性胸腺瘤的CT诊断价值  

The valve of CT in diagnosing the invasive and non-invasive thymoma

作　　者：唐文艳[1] 江魁明[1] 宋亭[1] 林文建[1] 陈展航[1] 

机构地区：[1]广州医学院第三附属医院放射科,510150

出　　处：《影像诊断与介入放射学》2009年第2期67-69,共3页Diagnostic Imaging & Interventional Radiology

摘　　要：目的探讨胸腺瘤的CT表现及评价胸腺瘤侵袭与否的临床价值。方法回顾性分析17例经手术及病理证实胸腺瘤的CT表现。结果非侵袭性胸腺瘤11例,CT上表现为圆形、卵圆形肿块6例,分叶状肿块4例,不规则形肿块1例;9例密度均匀,增强后轻度均匀强化;10例有完整的包膜,无邻近结构侵犯,与心脏大血管接触面光滑,其中表现为凸出型5例、平坦型3例或凹陷型2例;侵袭性胸腺瘤6例,5例CT表现为不规则肿块,密度不均匀,增强后呈显著不均匀强化,4例累及邻近的纵膈结构,脂肪间隙模糊、消失,形成灌铸型;1例出现肺胸膜浸润,2例出现心包、大血管浸润。结论胸腺瘤的CT表现具有特征性,对胸腺瘤侵袭性与非侵袭性的诊断有较高的准确性,可为其临床诊断和治疗提供可靠依据。Objective To Study CT features of thymoma and its value in differentiating the invasive from non-invasive thymoma. Methods CT findings of 17 cases with thymoma （11 non-invasive and 6 invasive） confirmed by surgery and pathology were analyzed retrospectively. Results 11 cases were non-invasive thymoma. On CT, the tumors were round or oval in 6 cases, lobulate in 4 cases, and irregular in 1 case. The lesions showed homogeneous density and mild enhancement in 9 cases. 10 of them showed complete capsules without invasion, The mass-cardiovascular interface was： convex type in 5 cases, flat type in 3 cases and concave type in 2 cases. 6 cases were invasive thymoma, tumors were irregular and heterogeneous in 5 cases. Significant and inhomogeneous enhancement on post contrast CT was found. Conclusion The CT features of thymoma was specific, and CT is of great value in differentiating the invasive from noninvasive thymoma.

关 键 词：纵隔 胸腺肿瘤 体层摄影 X线计算机 诊断 

分 类 号：R736.3[医药卫生—肿瘤] R734.2[医药卫生—临床医学]