title: Malignant melanoma arising within a congenital nevus.
mesh_terms: D005260:Female; D006801:Humans; D008545:Melanoma / Q000175:diagnosis / Q000473:pathology*; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis / Q000473:pathology*; D009508:Nevus, Pigmented / Q000145:classification / Q000151:congenital / Q000473:pathology*; D012878:Skin Neoplasms / Q000175:diagnosis / Q000473:pathology*