Abstract
Leiomyoma is a benign tumor of smooth muscles. Leiomyoma originating from the scrotum is a rare entity. We report a case of 53-year-old African male who presented with a 3 cm lump in the right side of scrotum. Clinically, it was provisionally diagnosed as sebaceous cyst and was excised. The histopathology showed a leiomyoma. There was no cytological atypia or mitosis. The patient also had squamous papilloma over left gluteal region.
Highlights
Leiomyomas are benign tumors that originate from smooth muscles cells
Cutaneous leiomyoma are of three types: 1) tumors of arrector pili muscle, 2) tumors of smooth muscles of blood vessels, and 3) genital leiomyoma [1]
Scrotal smooth muscle tumors arising from dartos smooth muscle can further be categorized as leiomyoma, atypical leiomyoma and leiomyosarcoma
Summary
Leiomyomas are benign tumors that originate from smooth muscles cells. Cutaneous leiomyoma are of three types: 1) tumors of arrector pili muscle (piloleiomyoma), 2) tumors of smooth muscles of blood vessels (angioleiomyoma), and 3) genital leiomyoma (from the smooth muscles of nipple, vulva, and scrotum) [1]. The genital leiomyoma arises from the diffuse network of smooth muscle in deep dermis of genital zones. In the scrotum, they arise from the dartos smooth muscle (dartoic leiomyoma) and in the nipple from the muscularis mamillae and areolae. They arise from the dartos smooth muscle (dartoic leiomyoma) and in the nipple from the muscularis mamillae and areolae This form is nearly always solitary and rarely causes significant pain. Scrotal smooth muscle tumors arising from dartos smooth muscle can further be categorized as leiomyoma, atypical leiomyoma and leiomyosarcoma. Despite being rare, smooth muscle tumors should be in the differential diagnoses in any scrotal swelling
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