摘要
目的 :分析胸腺瘤的CT表现 ,探讨其与组织病理学分型的相关性 ,以利于分期和计划治疗。材料和方法 :回顾分析40例经手术及病理证实胸腺瘤的CT影像特征及其相应的病理学分型。扫描采用SiemensSomatonVolumeZoom4层CT ,平扫层厚5mm ,增强扫描 :层厚3～5mm ,螺距为4～6 .延迟时间40s,造影剂采用典必乐或碘海醇100ml。病理学分型参照WHO1999年分型法。结果 :40例胸腺瘤中A型3例、AB型8例、B型21例、C型8例。肿块最大径>10cm共6例 ,其中AB型1例 (1/8) ,B型3例 (3/21) ,C型2例 (2/8) ;5～10cm共28例 ,其中A型1例 (1/3) ,AB型6例 (6/8) ,B型16例 (16/21) ,C型5例 (5/8) ;<5cm6例 ,其中A型2例 (2/3) ,AB型1例 (1/8) ,B型2例 (2/21) ,C型1例 (1/8)。3例A型、8例AB型及4例B型包膜完整 ,17例B型及8例C型包膜不完整 ,18例B型及8例C型轮廓不规则或分叶状。B型中有14例侵犯胸膜,13例侵犯心包 ;C型8例均侵犯胸膜及心包。结论 :轮廓光整且包膜完整的多为A型胸腺瘤 ,肿块最大径大于10cm且轮廓不规则或分叶状以B和C型多见 ;但CT较难区分此两型。
Purpose:To assess the CT features of various subtypes of thymic epithelial neoplasms on the basis of the1999World Health Organization classification.Materials and Methods:The CT findings of40cases which underwent thymectomy were retrospectively assessed and compared with histopothologically acˉcording to the1999World Health Organization classification.Results:Of the40cases,there were3type A,8type AB,21type B and8type C.Among all of them There were6cases with major diameter over10cm,including1type AB,3type B and2type C.28cases with major diameter between5and10cm,on which1case was of type A,6type AB,16type B and5type C;and6cases with major diameter less than5cm,among them2cases were type A,1type AB,2type B and1type C.All three type A,eight type AB and4type B tumors with integrate capsule,but all eight type C and17type B tumors without integrate capsule;type C and type B tumors had a higher prevalence of irregular or lobular contours(8/8,100%and18/21,85.7%).Pleural and pericardial invasion were more frequently seen in type B(14/21,13/21)and type C(8/8,100%)tumors.Conclusion:Smooth contours with integrate capsule are most suggestive of type A thymic epithelial tumor,whereas irregular or lobular contours with major diameter over10cm are most suggestive of type B and C tumors.CT is of limited value,however,in differentiating type B and C tumors.
出处
《中国医学计算机成像杂志》
CSCD
2004年第4期243-245,共3页
Chinese Computed Medical Imaging
