title: Hemorrhagic duodenitis: endoscopic study.
mesh_terms: D000328:Adult; D000368:Aged; D004386:Duodenum; D004724:Endoscopy; D004945:Esophagoscopy; D005336:Fiber Optic Technology; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D005773:Gastroscopy; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D008297:Male; D008875:Middle Aged