胸腺囊肿的CT诊断  

CT Diagnosis of Thymic Cysts

作　　者：张谷青[1] 张新东[1] 陈月芹[1] 王彦辉[1] 

机构地区：[1]济宁医学院附属医院CT室,山东济宁272029

出　　处：《临床放射学杂志》2013年第7期1049-1052,共4页Journal of Clinical Radiology

摘　　要：目的分析胸腺囊肿的CT表现,以提高对该病的诊断水平。方法回顾性分析13例经病理证实的胸腺囊肿的CT表现并复习相关文献,所有病例中8例行CT平扫及增强扫描,5例直接行增强扫描。结果 13例均为单发,位于前上纵隔3例,右前上纵隔5例,左前上纵隔4例,前中纵隔1例。最大者直径约17.0 cm,最小者直径约3.2 cm,平均为8.1 cm。13例中4例呈椭圆形,9例为圆形,无分叶,边界清楚。平扫10例密度均匀,3例密度不均匀。囊壁边缘钙化2例。单房11例,多房2例。增强扫描,9例囊肿壁菲薄,囊壁及囊内无强化表现,1例有壁结节,结节呈轻中度强化,与邻近组织界限不清。结论 CT能清晰地显示胸腺囊肿的形态、密度及其囊壁,为该病的诊断和临床治疗提供有价值的影像学信息。Objective To evaluate the value of CT in the diagnosis of thymic cysts. Methods CT findings of 13 pa- tients with surgically and pathologically confirmed thymic cysts were analyzed retrospectively and the relative literatures was reviewed. 8 cases underwent both plain and enhanced CT, and 5 cases underwent enhanced CT only. Results 13 cases were all solitary lesions. Among them, 3 cases located in anterosuperior mediastinum, 5 cases located in right anterosuperi- or mediastinum, 4 cases located in left anterosuperior mediastinum and 1 case located in anterior middle mediastinum. Themaximum diameter was 17.0cm. The minimum diameter was 3.2cm and average diameter was 8. lcm. 4 cases were oval in shape and 9 cases were similar in round shape, all of which were well defined. On plain CT, the lesions showed water like density and thin wall. Among them, 10 cases were uniform density, 3 cases were heterogeneous. 2 cases had punctated calcification in their walls. 11 cases were single locular, 2 were muhilocular. On enhanced CT, 9 cases showed thin wall without enhancement. One case with wall nodule had slightly intermediate enhancement without demarcation with adjacent tissue. Conclusion CT is very useful in preoperative diagnosis of thymic cysts.

关 键 词：胸腺囊肿 体层摄影术 X线计算机 

分 类 号：R816.4[医药卫生—放射医学]