Annular Bowen's disease.
D000368:Aged; D001913:Bowen's Disease / Q000188:drug therapy / Q000473:pathology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D006801:Humans; D008297:Male; D009333:Neck; D012878:Skin Neoplasms / Q000188:drug therapy / Q000473:pathology*