title: Basal cell carcinoma overlying histiocytofibroma.
abstract: A case of basal cell epithelioma overlying a long-standing histiocytofibroma is presented. The association of these two tumors is a rare finding. The role of dermal factors in the pathogenesis of epidermal tumors is briefly discussed, just as the controversy about the reactive or neoplastic nature of the epidermal change.
mesh_terms: D002280:Basal Cell Carcinoma / Q000473:pathology*; D005260:Female; D018219:Histiocytoma, Benign Fibrous / Q000473:pathology*; D006801:Humans; D007866:Leg; D008875:Middle Aged; D012867:Skin / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology*