Abstract
A case of a large renal angiomyolipoma in a relatively asymptomatic female subject without tuberous sclerosis is presented. The case demonstrates a parasitized blood supply from a lumbar artery and the superior mesenteric artery, in addition to the characteristic angiographic features reported previously. A parasitized blood supply to renal masses was considered previously to be associated with malignant processes. Parasitization of a blood supply by a renal mass lesion is not definite evidence of malignancy.