肝脏血管平滑肌脂肪瘤在MSCT、MRI扫描影像表现分析

Image Expression of Hepatic Angiomyoli-poma in MSCT and MRI Scan

目的分析肝脏血管平滑肌脂肪瘤在MSCT、MRI扫描影像表现。方法回顾性分析本院2017年4月至2019年5月收治的34例肝脏血管平滑肌脂肪瘤患者的临床资料,将MRI及MSCT的诊断结果进行讨论和分析,观察肿瘤分布的位置、大小、形态、密度、动态增强扫描表现等。结果13例混合型CT可见不规则的肿块、条索状稍低密度影,增强扫描有强化,门脉期和延迟期扫描持续强化,密度不消退。肝脏血管平滑肌脂肪瘤典型的MRI表现为含脂肪的实性肿块。常见的混合型肝脏血管平滑肌脂肪瘤在T1WI上呈高信号,范围较广且明显,用脂肪抑制后可呈不同程度高信号,或信号消失,有2例经延迟扫描存在假包膜。结论MSCT检查及MRI检查可清楚显示肝脏血管平滑肌脂肪瘤的影像学特点,为临床上诊断和鉴别肝脏血管平滑肌脂肪瘤提供了可靠的信息,结合患者临床资料可有效提高诊断准确率。

Objective To analyze the image expression of hepatic angiomyolipoma in MSCT and MRI scan.Method The clinical data of 34 patients with hepatic angiomyolipoma admitted from April 2017 to May 2019 were retrospectively analyzed.The diagnosis results of MRI and MSCT were discussed and analyzed.The location,size,shape,density,and the performance of the dynamic enhanced scan of the tumor distribution were observed.Results The mixed CT of 13 cases showed irregular masses,and slightly lower density shadow like strips,and after enhanced scan,it can be seen with enhancement.Scanning in the portal and lag phases showed continued enhancement and the density did not fade.The typical MRI of hepatic angiomyolipoma showed solid mass with fat.Common mixed hepatic angiomyolipomas showed high signal on T1WI,which was wide and obvious.After fat suppression,it showed different degrees of high signal,or showed that the signal disappeared,and there were 2 cases with pseudocapsule by delayed sweep.Conclusion MSCT and MRI can clearly show the imaging features of hepatic angiomyolipoma,which provides reliable information for clinical diagnosis and differential diagnosis of hepatic angiomyolipoma.Combined with clinical data,it can effectively improve the diagnostic accuracy.