肝脏上皮样血管平滑肌脂肪瘤的MRI征象分析

发布时间：2019-01-24 14:58

【摘要】：目的:分析肝脏上皮样血管平滑肌脂肪瘤(Epi-AML)的MRI特点。方法:回顾性分析经手术病理证实的10例(共11枚)肝脏Epi-HAML患者MRI资料,包括病灶的数目、部位、大小、外形、病灶实质部分T1、T2及扩散加权信号强度、是否含有脂肪成分、强化特征、病灶内血管、引流静脉情况、有无假包膜及周围肝实质有无肝硬化、脂肪肝背景。结果:9例患者为单发病变,1例为两枚病灶。7枚位于右叶,4枚位于左叶;10枚病灶呈圆形或椭圆形,境界清晰,T1WI低信号,T2WI高信号,9枚DWI高信号,3枚病灶内含有少量脂肪;动脉期11枚病灶均明显强化,强化模式9枚为"快进慢出"型;9枚病灶内可见点条状血管影,6枚病灶周边可见"早期引流静脉",3枚在门脉期和延迟期"假包膜"征;各有1例有肝硬化及脂肪肝背景。结论:少或无脂肪的境界清晰的富血供肿块、"快进慢出型"强化特征、病灶内血管影及早期引流静脉是肝脏,Epi-AML一定特征的MRI征象。
[Abstract]:Objective: To study the MRI features of hepatic epithelioid angiomyolipoma (Epi-AML). Methods: The MRI data of 10 (11) liver Epi-HAML patients confirmed by the operation and pathology were analyzed retrospectively, including the number, location, size, shape of the focus, the T1, T2 and diffusion-weighted signal intensity of the lesion, and whether it contains the fat component, the enhancement feature, the inner vessel of the lesion, The condition of the drainage vein, the presence or absence of the pseudoenvelope and the presence or absence of liver cirrhosis and fatty liver background in the surrounding liver. Results: 9 patients were single-shot lesions, one case was two lesions. 7 were located in the right lobe and 4 in the left lobe; 10 lesions were circular or elliptical, with clear border, low signal on T1WI, high T2WI signal, 9 DWI high signal, 3 lesions with a small amount of fat, and 11 lesions in the arterial phase were significantly enhanced, 9 of 9 lesions were of "Come on, slow out." type; 9 lesions were observed with a strip of blood vessel, 6 lesions were visible "early drainage vein", 3 were in the gate and delayed "pseudoenvelope", and 1 case had a background of cirrhosis and fatty liver. Conclusion: It is a characteristic MRI feature of the liver and the Epi-AML in the liver and the Epi-AML with clear and clear rich blood for mass and "Fast-in and slow-out type"-enhanced features, and the internal and early drainage veins of the lesions are the liver and the Epi-AML.
【作者单位】：安徽省池州市人民医院影像科;复旦大学附属中山医院放射科上海市影像医学研究所;
【分类号】：R445.2;R735.7

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