肾癌假包膜征高场MRI表现特征、病理基础及意义  

Pseudocapsule Sign of Renal Cell Carcinoma:Its Features on High-Field MRI,Pathologic Basls and CIinlcal Significance

作　　者：李涛[1] 高元桂[1] 高育[1] 文载律[1] 梁燕[1] 

机构地区：[1]解放军总医院放射诊断科

出　　处：《中华放射学杂志》1995年第11期781-783,共3页Chinese Journal of Radiology

摘　　要：作者对３５个肾癌进行磁共振成像（ＭＲＩ）与病理大切片对照观察，着重研究高场（１．０Ｔ）ＭＲＩ肾癌假包膜征的表现特点及其病理基础。结果显示：高场ＭＲＩ肾癌假包膜征主要表现为Ｔ＿２加权像上肿瘤内侧缘弧形低信号，显示率为６２．９％；假包膜征的病理基础为癌周结构［由纤维包膜和（或）受压致密肾实质组成］，且当其厚度大于０．６２ｍｍ时，ＭＲＩ方能显示。此外，对假包膜征评估肾癌组织学分级的应用价值进行了探讨。The features of pseudocapsule sign(PS)of renal cell carcinoma(RCC)at high- field(1. 0 Tesla) magnetic resonance imaging(MRI)and its pathologic basisi were studied by corre-lation of MRI findings with pathologic large section in 35 renal cell carcinoma(RCC).The resuIts showed that the PS of RCC at 1.0T MRI appeared as curved hypointensity at the medial margin of the tumor on T_2-weighted image(T_2WI)with an incidence of 62.9%。The pathologic basis of PS was peritumor structure(fibrous pseudocapsule and/or compressed renal parenchyma).Only when its thickness exceeded 0. 62mm could the PSbedemonstrable on MRI.In addition, the authors dis-cussed the value of PS in evaluating the histologic grading of RCC.

关 键 词：肾肿瘤 假包膜征 NMR 病理学 成像 

分 类 号：R737.110.2[医药卫生—肿瘤]