Leiomyosarcoma of the duodenum.
D000328:Adult; D004379:Duodenal Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006801:Humans; D007890:Leiomyosarcoma / Q000175:diagnosis* / Q000473:pathology; D008297:Male