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目的探讨肝血管平滑肌脂肪瘤(HAML)的CT表现及相关临床特点。方法回顾性分析3例经手术病理确诊的HAML患者的临床、CT及病理资料,分析其影像学表现及特点。结果 3例患者均为女性,其中2例有腹痛表现,1例无任何症状。2例实验室检查均正常,1例除乙肝标志物(+)外,其余正常。CT表现:肿瘤位于肝右叶前上段1例,右叶后下段1例,左内叶1例;肿块内可见脂肪成分及软组织成分,其中脂肪成分CT值为-80～-20HU(平均-50HU);增强后均有不同程度强化,可见强化血管影。术中见均为外生性包块。免疫组化染色HMB-45(+)、α-SMA(+)、S-100(+),符合血管平滑肌脂肪瘤的诊断。结论 HAML是一种少见的良性肿瘤,其影像学表现有一定特征性,确诊有赖于免疫组化检测HMB-45。
Objective To investigate the CT findings and related clinical features of hepatic angiomyolipoma (HAML). Methods The clinical, CT and pathological data of 3 HAML patients confirmed by surgery and pathology were retrospectively analyzed. Their imaging features and characteristics were analyzed. Results All the 3 patients were female, of which 2 had abdominal pain and 1 had no symptoms. 2 cases of laboratory tests were normal, 1 case of hepatitis B markers (+), the rest of the normal. CT findings: the tumor located in the anterior segment of the right liver in 1 case, 1 case in the posterior segment of the right lobe and 1 case in the left internal lobe. The fat and soft tissue components were visible in the tumor. The CT value of the fat component was -80 ~ -20HU (average -50HU ); Enhanced enhanced to varying degrees, showing enhanced blood vessels shadow. Intraoperative see are exogenous mass. Immunohistochemical staining of HMB-45 (+), α-SMA (+), S-100 (+), in line with the diagnosis of angiomyolipoma. Conclusions HAML is a rare benign tumor. The imaging features of HAML have certain characteristics. The diagnosis of HAML depends on the immunohistochemical detection of HMB-45.