[Symptomatic renal angiomyolipoma associated with tuberous sclerosis]

A kidney angiomyolipoma associated with tuberous sclerosis is described. This rare tumor is sometimes asymptomatic and is found at autopsy, but in some cases it may be confounded with a malignant tumor, as in the present case. The authors consider the angiomyolipoma as a choristoma rather than as a true neoplasm.