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.