title: Basal cell epitheliomas developing in a localized linear epidermal nevus.
abstract: A case is presented of a fifty-seven year old white man in whom an early basal cell epithelioma as well as a large ulcerated pigmented basal cell epithelioma developed from a pre-existing localized linear epidermal nevus in which there were no abnormal pilosebaceous complexes. The transition stages from a localized purely epidermal nevus to an early basal cell epithelioma and finally to a large ulcerated pigmented basal cell epithelioma are clearly illustrated, and clinicians should be alerted to the fact that this sequence of events may rarely occur.
mesh_terms: D002280:Basal Cell Carcinoma / Q000150:complications / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000473:pathology*; D009508:Nevus, Pigmented / Q000150:complications / Q000473:pathology*; D012878:Skin Neoplasms / Q000150:complications / Q000473:pathology*