Imaging Findings of Perirenal Epithelioid Angiomyolipoma Mimicking a Malignant Retroperitoneal Tumor: A Case Report with Imaging Findings

Abstract

Epithelioid angiomyolipoma (EAML) is an uncommon, variant type of angiomyolipoma with a possibility of metastatic transformation and distant spread. Angiomyolipomas, including epithelioid variant type, are mostly renal in origin. EAML originating from extrarenal location is very rare and imaging findings are not well described. Herein, we reported a very rare case of EAML arising from the perirenal space that mimicked a malignant retroperitoneal tumor, in a 39-year-old female.

Keywords

• angiomyolipoma
• retroperitoneal neoplasms
• retroperitoneal space
• tomography
• x-ray computed
• humans