Multiloculated Cystic Type Renal Epithelioid Angiomyolipoma Mimicking Renal Cell Carcinoma: A Case Report

Abstract

Renal epithelioid angiomyolipoma (EAML) is a rare variant of angiomyolipoma (AML), with a prominent epithelioid component. EAML usually presents as a large heterogeneous soft tissue lesion with intratumoral hemorrhage and variable necrosis or cystic changes. We present a case of multiloculated cystic renal EAML mimicking renal cell carcinoma in a 64-year-old female. Intracystic massive hemorrhage, hyperattenuating wall and septa on an unenhanced study, and enlarged intratumoral vessels can be helpful imaging features for distinguishing renal EAML from renal cell carcinoma.

Keywords

• angiomyolipoma
• computed tomography
• x-ray
• magnetic resonance imaging
• renal cell carcinoma