title: Primary malignant melanoma of the urethra in a black man: a case report.
abstract: We report a unique occurrence of primary urethral melanoma in a black man. The biological relationships to melanocyte/melanin site densities or to precursor mucosal lesions are discussed as possible etiological factors in the occurrence of this rare neoplasm.
mesh_terms: D000368:Aged; D044383:Black People; D006801:Humans; D008297:Male; D008544:Melanocytes / Q000473:pathology; D008545:Melanoma / Q000473:pathology*; D014523:Urethral Neoplasms / Q000473:pathology*