A Case of Benign Leiomyoma Arising from Dartos Muscle:An Unusual Form of Chronic Scrotal Swelling

Abstract

Leiomyomas are benign mesenchymal tumors which arise from smooth muscle cells. They are most commonly encountered in the uterus but leiomyomas originating from the scrotum is a rare entity and very few cases are reported in literature so far. There are three types of superficial leiomyoma based on their site of origin: piloleiomyoma arising from arrector pili, scrotal leiomyoma arising from dartos muscle, and angioleiomyoma arising from smooth muscles of blood vessels. Herein, we report a case of scrotal leiomyoma in a 60 years old male which was clinically diagnosed as sebaceous adenoma and was excised. Histopathological and Immunohistochemical features were consistent with leiomyoma and final diagnosis of scrotal leiomyoma was given.