Case Report

Unilateral simultaneous renal oncocytoma and angiomyolipoma: case report

Theodosios Theodosopoulos¹ , Anneza Yiallourou¹ , Maria Kyriazi¹ , Georgios Anastasopoulos¹ , Evi Kairi-Vassilatou² , Nicolaos Dafnios¹ and Ioannis Vassiliou¹

¹  2nd Department of Surgery, Aretaieion Hospital, University of Athens, Greece

²  Department of Pathology, Aretaieion Hospital, University of Athens, Greece

author email corresponding author email

Cases Journal 2009, 2:9093doi:10.1186/1757-1626-2-9093

Published:	26 November 2009

Abstract

A rare case of synchronous angiomyolipoma and oncocytoma in the same kidney of a 70 year old man is presented. A left renal mass was found incidentally by ultrasound. Computerized tomography and magnetic resonance imaging revealed a 1,3 cm mass in the mid-portion of the left kidney, whereas on the lower pole of the same kidney, a 3,3 cm mass was also revealed, consistent with angiomyolipoma. A working diagnosis of renal cell carcinoma was made. A radical nephrectomy was performed. Microscopically, the tumor of the lower pole was found to be an angiomyolipoma, whereas the mid-portion tumor was an oncocytoma. Until now, only 16 cases of unilateral simultaneous presence of renal angiomyolipoma and oncocytoma have been reported. Of these cases, all except one were female and three were associated with the tuberous sclerosis complex. It is well worth remarking, that renal oncocytoma overlap with other renal neoplasms, therefore nephrectomy remains the treatment of choice.

Renal angiomyolipoma and oncocytoma are uncommon neoplasms and their simultaneous presence in the same kidney is rare. Only 16 cases have been reported until now in the literature. The purpose of this paper is to present an additional case without evidence of tuberous sclerosis.