乏脂肪型肝脏血管平滑肌脂肪瘤CT和MRI表现分析及鉴别诊断文献复习
Journal of Chinese Oncology(2018)
Abstract
[目的]探讨影像学上表现为乏脂肪型的肝脏血管平滑肌脂肪瘤(hepatic angiomyolipoma,HAML)的CT和MRI表现并复习文献,旨在提高对该病的认识和诊断准确性.[方法]回顾性分析经穿刺或者手术病理证实的6例乏脂肪型HAML的CT和MRI表现及临床资料.[结果]6例HAML均为女性,4例位于肝右叶,2例位于肝左叶.6例HAML均单发,边界清楚.CT平扫呈稍低密度,密度均匀,平扫均未见条状及裂隙状脂肪密度影,增强扫描动脉期肿瘤呈均匀明显强化,门脉期强化明显减退;MRI平扫T1WI呈稍低信号,T2WI呈稍高信号,正反相位未见明显信号改变,DWI及ADC均呈高信号.增强扫描动脉期肿瘤均匀明显强化,门脉期强化明显减退.6例增强模式均为“快进快出”型.6例病灶均可见粗大强化的血管穿行于病灶或者在病灶周围.6例病灶内均未见坏死、囊变、钙化及假包膜.[结论]HAML的影像学表现具有一定的特征性,了解这些影像特征能够提高该病术前诊断的正确率.
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Key words
hepatic angiomyolipoma,computed tomography,magnetic resonance imaging,differential diagnosis
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