title: Palmar lesions and a nonhealing ulcer of the ear in a former agricultural worker. Arsenical keratoses; invasive squamous cell carcinoma of the right ear; and bowenoid keratoses.
mesh_terms: D000382:Agricultural Workers' Diseases / Q000473:pathology*; D001152:Arsenicals / Q000009:adverse effects*; D001913:Bowen's Disease / Q000139:chemically induced / Q000473:pathology; D002294:Carcinoma, Squamous Cell / Q000139:chemically induced / Q000473:pathology; D009783:Dermatitis, Occupational / Q000473:pathology*; D004428:Ear Neoplasms / Q000139:chemically induced / Q000473:pathology; D004431:Ear, External / Q000473:pathology; D006801:Humans; D007642:Keratosis / Q000139:chemically induced / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D012878:Skin Neoplasms / Q000139:chemically induced / Q000473:pathology*
chemical_list: D001152:Arsenicals