Massive bleeding from a polyp in a duodenal diverticulum.
D004240:Diverticulum; D004379:Duodenal Neoplasms; D004386:Duodenum; D006396:Hematemesis / Q000209:etiology*; D006470:Hemorrhage; D006801:Humans; D009369:Neoplasms; D011127:Polyps / Q000150:complications*
DUODENUM/neoplasms; HEMATEMESIS/etiology; POLYPI/complications