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目的分析肾脏上皮样血管平滑肌脂肪瘤(epithelioid angiomyolipoma,EAML)的影像学表现及其病理,以提高对该病的诊断水平。方法回顾性分析8例经病理证实的病例其影像学表现及其病理。结果 CT平扫,4例含有明确脂肪成份;4例未见明显脂肪成份,其中1例可见多发钙化灶,8例病例中均行增强扫描,实性部分动脉期明显强化,静脉期强化下降幅度约20～30 Hu,其中1例呈明显侵袭性表现。术后病理免疫组化均证实为上皮样肾血管平滑肌脂肪瘤。结论肾脏上皮样血管平滑肌脂肪瘤影像学表现具有一定特征,当AML出现侵袭性表现,应考虑到肾脏上皮样血管平滑肌脂肪瘤。其确诊仍有赖于病理组织学及免疫组织化学检查。
Objective To analyze the imaging features and pathology of renal epithelioid angiomyolipoma (EAML) in order to improve the diagnosis of this disease. Methods Retrospective analysis of 8 cases of pathologically confirmed cases of its imaging findings and pathology. The results of CT scan, 4 cases with a clear fat component; 4 cases no significant fatty components, including 1 case of multiple calcification, enhanced scanning in 8 cases, the solid part of the arterial phase was significantly reduced venous phase decreased About 20-30 Hu, of which 1 was significantly aggressive. Postoperative pathological immunohistochemistry were confirmed as epithelioid renal angiomyolipoma. Conclusion Renal epithelioid angiomyolipoma has certain features. When AML is aggressive, renal epithelioid angiomyolipoma should be considered. The diagnosis still depends on histopathology and immunohistochemistry.