纵隔类癌的CT表现(附6例报道)

CT findings of mediastinal carcinoid

目的 :分析纵隔类癌的CT表现 ,探讨CT诊断价值。方法 :对 1994年～ 2 0 0 1年经 4所医院病理证实的纵隔类癌 6例进行临床、病理、CT对照分析。结果 :①临床无特异性表现 ,极少出现类癌综合征 ;②CT表现为中上纵隔肿块 ,位于胸腺区或向其内生长 ,与心底部大血管及心包关系密切 ,并有沿血管间隙生长的特点 ,造影后有轻、中度强化 ,可发生胸内外转移 ;③CT表现与病理、预后密切相关。结论 :纵隔类癌较罕见 ,可能来源于胸腺。CT发现以上特点可提示诊断 ,还可观察肿块大小、位置、范围、内部及与血管心包的关系 ,帮助确定手术方案及推测预后 。

Objective:To analyze CT findings of mediastinal carcinoid and to assess the value of CT diagnosis. Methods: 6 cases of mediastinal carcinoid proved by pathology were collected from 4 hospitals of Yunnan between 1997 and 2001. The CT appearances were analyzed in correlation with the clinical and pathological findings.Results:①Mediastinal carcinoid had no characteristic clinical manifestations and rarely presented the syndrome of carcinoid. ②CT appearances included a large soft tissue mass in uppermiddle mediastium.The mass located usually within thymus region or developed into it.And it was closely related to the great vessel and pericardium,extended characteristically along vascular spaces.Moreover,it was moderately or slightly enhanced after bolus injection of contrast medium.③CT manifestations were closely related to the pathology and prognosis of mediastinal carcinoid.Conclusion:Mediastinal carcinoid is rare and may origimate from thymus.The diagnosis of mediastinum carcinoid can be made according to the CT features.Also,CT can demonstrate its size,location,internal structure and relation ship with cardiovascularity.It is helpful for surgical planning and prediction of the prognosis.The final diagnosis,however,depends on pathology.