title: Acute lower gastrointestinal bleeding secondary to varices of the superior mesenteric venous system.
mesh_terms: D000368:Aged; D000792:Angiography; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D008642:Mesenteric Veins / Q000000981:diagnostic imaging*; D008875:Middle Aged; D010690:Phlebography; D014648:Varicose Veins / Q000150:complications* / Q000000981:diagnostic imaging