title: Basal cell epithelioma in a chronic leg ulcer.
mesh_terms: D000368:Aged; D002280:Basal Cell Carcinoma / Q000209:etiology* / Q000473:pathology; D002908:Chronic Disease; D005260:Female; D006801:Humans; D007871:Leg Ulcer / Q000150:complications* / Q000473:pathology; D012878:Skin Neoplasms / Q000209:etiology* / Q000473:pathology