Brunner's gland hamartoma of the duodenum.
D000368:Aged; D002011:Brunner Glands / Q000473:pathology*; D004379:Duodenal Neoplasms / Q000150:complications / Q000473:pathology*; D004386:Duodenum / Q000473:pathology*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006222:Hamartoma / Q000150:complications / Q000473:pathology*; D006801:Humans