CT和MRI诊断肝脏原发性透明细胞癌  

CT and MRl in diagnosis of hepatic primary clear cell carcinoma

作　　者：刘勇[1] 薛鹏[1] 肖智博[2] 陈勇[1] 张斯佳[1] 仲继刚[1] 

机构地区：[1]郑州人民医院医学影像科,河南郑州450003 [2]重庆医科大学附属第一医院院放射科,重庆400016

出　　处：《中国医学影像技术》2014年第1期87-90,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的探讨原发性肝脏透明细胞癌（PCCCL）的CT和MRI特征。方法回顾性分析12例经手术病理证实的PCCCL的CT及MRI资料，其中10例接受CT、8例接受MR及DWI。结果12例PCCCL共14个病灶，呈结节状或类圆形，瘤径1．6～9．8cn＇l，平均3．6cm。10例CT平扫呈低密度；增强后动脉期8例肿瘤呈轻度强化，门静脉期持续强化，2例动脉期不均匀明显强化，门静脉期强化程度明显下降；延迟期所有病灶均为低密度，2例显示包膜延迟强化。平扫T2WI6例呈混杂高信号，1例呈稍高信号，1例为稍低信号；4例TIWI正相位呈稍低信号，2例呈稍高信号，2例呈等信号，反相位8例病灶信号均减低，4例减低明显。DWI6例呈不均匀高信号，2例呈等信号。增强扫描动脉期4例肿瘤不均匀明显强化，2例轻度强化，2例呈环形明显强化；门静脉期4例强化较动脉期减低，2例轻度持续强化，2例中心填充强化；延迟期7例病灶呈相对低信号，l例呈等信号，4例显示环形强化包膜。结论PCCCI，的CT及MRI表现具有一定特征；cT和MRI足诊断PCCCI。的有效方法。Objective To investigate CT and MRI features of primary clear cell carcinoma of liver （PCCCL）. Methods CT and MRI findings of 12 patients with PCCCL proved by pathology were analyzed retrospectively. Ten patients under- went CT, and 8 patients underwent MRI. Results＂ There were 14 nodular or oval lesions in 12 patients, with diameter ran- ging from 1.6 to 9.8 cm （mean 3.6 cm）. All lesions showed low-density on plain CT. On enhanced CT, lesions in 8 pa- tients showed slight enhancement at arterial phase and continued to strength at portal phase, while in 2 patients showed un- even significant enhancement at arterial phase but decreased at portal phase, and lesions in all 10 patients showed low densi- ty at delay period, and in 2 patients showed delayed enhanced envelope. On MR scan, lesions in 6 patients had mixed high signal on T2WI, in 1 patient showed slightly high signal, while in another patient showed slightly low signal. Lesions in 4 patients showed slightly lower signal, in 2 patients showed slightly higher signal, in the rest 2 patients showed equal signal on T1WI. The signals of all lesions reduced on anti-phase T1WI, in 4 patients reduced obviously. On DWI, lesions in 6 pa- tients showed heterogeneous high signal, in 2 patients showed equal signal. On enhanced MRI, lesions in 4 patients showed relatively high signal with uneven significant enhancement, in 2 patients showed mild enhancement, and in the rest 2 pa- tients showed ring-shaped significant enhancement at arterial phase. At portal venous phase, enhancement reduced in 4 pa- tients, continued in 2 patients, while central filling enhancement was observed in the rest 2 patients. Lesions in 7 patients showed relatively low signal and in 1 patient showed equal signal at delayed phase. Ring-like capsule enhancement was found in 4 patients. Conclusion CT and MRI findings of PCCCL have certain characteristics, which are effective for diag- nosis of PCCCL.

关 键 词：肝肿瘤 透明细胞癌 体层摄影术 X线计算机 磁共振成像 

分 类 号：R445[医药卫生—影像医学与核医学] R738.7[医药卫生—诊断学]