肝细胞腺瘤的MRI诊断价值  

The Diagnostic Value of MRI for Hepatocellular Adenoma

作　　者：张艳芹[1] 孙培祥[1] 张啸波[2] 叶慧仪 

机构地区：[1]河南省漯河市第三人民医院放射科,河南漯河462000 [2]解放军总医院放射科,北京100853

出　　处：《中国CT和MRI杂志》2015年第1期55-57,共3页Chinese Journal of CT and MRI

摘　　要：目的探讨MRI对肝细胞腺瘤(hepatocellular adenoma,HCA)的诊断价值。方法回顾性分析8例经病理证实的HCA的MRI检查资料,均行MRI平扫及动态增强扫描。结果 1病灶均单发,圆形或类圆形,边界清晰;肝右叶5例,左叶3例,平均直径5.8cm。4例肿块内有出血;7例有包膜。2MRI平扫:T1WI同相位呈稍低信号5例,等信号2例,稍高信号1例;反相位信号均减低;T2WI稍高信号6例,等或稍低信号2例,DWI稍高信号7例,等信号1例。3MRI增强:6例动脉期明显强化、门静脉期持续强化,延迟期3呈稍高信号,1例呈等信号,2例呈稍低信号。1例动脉期中度强化,1例轻度强化,门静脉期均持续强化,延迟期呈稍低信号。7例有包膜并延迟强化。结论MRI检查能准确显示HCA的病理成分,可以提高其与肝内含脂质病变的鉴别诊断,在术前做出正确诊断。Objective To investigate value of MRI in diagnosing hepatocellular adenoma （HCA）. Methods MRI findings of 8 cases with HCA proved by pathology were analyzed retrospectively. All were performed MRI plain and dynamic enhanced. Reaults All lesions were solitary, and round or oval with clear boundaries; There were 5 cases in right lobe, 3 cases in left lobe, and the average diameter was 5.8cm. There are 4 cases with bleeding, 7 cases with enveloped. MRI scan： 5 cases showed slightly lower signal and 2 cases with equal signal, 1 case slightly higher signal on TIWI of in phase, all signals could be seen reduced on out-phase . 6 cases showed slightly higher signal, 2 cases equal or slightly lower signal on T2WI, 7 cases showed higher signal and Icase with equal signal on DWI. MRI enhancement： There were 6 cases significantly enhanced at arterial phase, continued to strengthen at portal venous phase, 3 cases showed slightly signal and 1 case showed equal signal, 2 cases showed slightly lower signal at delayed phase. 1 case moderately enhanced and 1 case mild enhanced at arterial phase, both continued to strengthen at venous phase, with slightly lower signal at delay period. 7 cases with enveloped and delayed enhanced. Conclusion MRI examination could accurately display tHe pathological component of HCA, improve the differential diagnosis of liver lesions containing lipids and make a correct preoperatively diagnosis.

关 键 词：肝细胞腺瘤 磁共振成像 X 线计算机:扩散加权 

分 类 号：R445.2[医药卫生—影像医学与核医学] R735.7[医药卫生—诊断学]