Sporadic, classic-type renal angiomyolipoma with renal vein and inferior vena cava extension: an incidental case.

Renal angiomyolipomas (AMLs) were first described in the early 1900s by Gravitz, but it was not until 1951 that they were named renal AML. These kidney tumours are rare, occurring in 0.13%-0.