title: GRAVITATIONAL ULCERATION. A PRE-CANCEROUS LESION.
mesh_terms: D002277:Carcinoma; D002280:Basal Cell Carcinoma; D002294:Carcinoma, Squamous Cell; D005853:Geriatrics; D006801:Humans; D007871:Leg Ulcer; D009369:Neoplasms / Q000209:etiology*; D012878:Skin Neoplasms
keywords: CARCINOMA, BASAL CELL; CARCINOMA, EPIDERMOID; GERIATRICS; LEG ULCER; NEOPLASM ETIOLOGY