Angiomyolipoma of the scrotum: report of a rarely seen case and review of the literature.

Angiomyolipoma (AML) is a benign, histologically complex mesenchymal tumor arising mainly from the kidney and liver. The majority (80%) of these tumors arise as sporadic tumors, while 20% of them are associated with tuberous sclerosis. Extra-renal sites of AML, though rare, have been reported in literature. In this report, we describe a case of AML arising from the scrotal skin, and presenting as a scrotal mass. Although skin is the most commonly reported site after kidney and liver, scrotal skin AML presents as an intriguing mass in a region known for germ cell tumors which has been reported only once before. A 35-year-old male presented with scrotal swelling. His physical examination, laboratory investigations and imaging studies were non-specific. Excision of the lesion with subsequent histopathological examination revealed the true nature of the lesion. This lesion should be included in the differential diagnosis of scrotal masses.