肝脏血管平滑肌脂肪瘤的CT影像表现

目的探讨分析肝脏血管平滑肌脂肪瘤（angiomyolipoma，AML）CT表现及特征。方法回顾性分析8例经手术病理证实，且均进行了CT检查的肝脏AML患者资料。结果8例肝脏AML中脂瘤型1例，以脂肪成分为主，CT显示大片脂肪密度；血管瘤型2例，以血管成分为主，CT增强动脉期明显强化；肌瘤型1例，主要是由平滑肌成分组成，平扫密度均匀，增强呈均一或不均匀强化；混合型4例，三种成分含量相似，增强扫描呈不均匀强化。结论不同病理类型的肝脏AML的CT表现有所不同，CT检查可以清晰的显示出肿瘤的影像特征，了解肝脏AML的病理类型与CT表现之间的关系，有助于提高肝脏AML的cT诊断率。

CT findings of hepatic angiomyolipoma

Objective To investigate the appearances and characteristics of hepatic angiomyolipoma （HAML） on CT. Methods The information of eight HAML patients diagnosed pathologically and underwent CT scanning was retrospec tively analyzed. Results Among the eight patients with HAML, one belonged to lipoma type that was mainly composed of adipocytes which showed a large fat density on CT. 2 belonged to angiomatous type that was mostly composed of abnormal vessels, which showed pronounced enhancement in the early arterial phase by enhanced CT scanning. One belonged to my omatous type was predominantly composed of smooth muscle cells, and showing homogeneously low density on plain scan and homogeneous or heterogeneous enhancement on enhanced scanning. 4 belonged to mixed type that evenly comprising sheets of smooth muscle cells admixed with islands of adipocytes and abnormal vessels, and showing heterogeneous en hancement on enhanced scanning. Conclusion The CT appearances of HAML with different pathological subtypes were not the same. CT scanning can accurately reflect the image feature of tumor. Knowing the relations in different pathologi cal subtypes and CT appearances of HAML is benefit to improve the CT diagnostic rate in HAML.