title: Basal cell epithelioma occurring in an epidermal nevus.
abstract: An unusual case is presented of a thirty-year-old woman in whom basal cell epithelioma developed from a preexisting localized epidermal nevus in the scalp. The epidermal nevus was not associated with any abnormal pilosebaceous complexes.
mesh_terms: D000328:Adult; D001478:Basal Cell Nevus Syndrome / Q000473:pathology; D002280:Basal Cell Carcinoma / Q000209:etiology* / Q000473:pathology; D005260:Female; D006801:Humans; D009506:Nevus / Q000150:complications*; D012878:Skin Neoplasms / Q000209:etiology* / Q000473:pathology