title: [Varices of the superior mesenteric venous system: duplication of the superior mesenteric vein].
mesh_terms: D004378:Duodenal Diseases / Q000209:etiology; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006801:Humans; D008297:Male; D008642:Mesenteric Veins / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008875:Middle Aged; D011859:Radiography; D014648:Varicose Veins / Q000000981:diagnostic imaging / Q000209:etiology*