title: Demonostration of an ulcer niche during arteriography for acute gastrointestinal bleeding.
mesh_terms: D000368:Aged; D000792:Angiography; D004381:Duodenal Ulcer / Q000000981:diagnostic imaging*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006801:Humans