title: Mesenteric arteriovenous fistula causing portal hypertension and bleeding duodenal varices.
abstract: We report a case of portal hypertension associated with a non-traumatic arteriovenous fistula, presenting with bleeding duodenal varices. The patient was admitted for melaena. Emergency endoscopy showed oesophageal varices with no signs of recent bleeding and with no blood in the upper gastrointestinal tract. Arteriography of the coeliac axis and superior mesenteric artery failed to detect any bleeding source. Endoscopy was repeated because of persistent bleeding and revealed active bleeding from varices in the distal duodenum. The patient underwent surgery and a large paraduodenal varicose vein associated with an arteriovenous fistula was found. Resection of the paramural varix and surgical occlusion of the arteriovenous fistula were effective in the control of bleeding. Liver biopsy revealed mild portal fibrosis without cirrhosis. Three years after surgery the patient still has oesophageal varices but has not had recurrent bleeding. There was regression of intraduodenal varices.
authors.affiliation: Department of Gastroenterology, Coimbra University Hospital, Portugal.
authors.forename: J
authors.initials: J
authors.lastname: Baranda
authors.forename: J M
authors.initials: JM
authors.lastname: Pontes
authors.forename: F
authors.initials: F
authors.lastname: Portela
authors.forename: L
authors.initials: L
authors.lastname: Silveira
authors.forename: P
authors.initials: P
authors.lastname: Amaro
authors.forename: P
authors.initials: P
authors.lastname: Ministro
authors.forename: A
authors.initials: A
authors.lastname: Rosa
authors.forename: I
authors.initials: I
authors.lastname: Pimenta
authors.forename: P
authors.initials: P
authors.lastname: Andrade
authors.forename: A
authors.initials: A
authors.lastname: Bernardes
authors.forename: J
authors.initials: J
authors.lastname: Pereira
authors.forename: M C
authors.initials: MC
authors.lastname: Leitão
authors.forename: A
authors.initials: A
authors.lastname: Donato
authors.forename: D
authors.initials: D
authors.lastname: de Freitas
mesh_terms: D000368:Aged; D001164:Arteriovenous Fistula / Q000150:complications* / Q000601:surgery; D004386:Duodenum / Q000098:blood supply*; D006471:Gastrointestinal Hemorrhage / Q000209:etiology* / Q000601:surgery; D006801:Humans; D006975:Hypertension, Portal / Q000209:etiology*; D008297:Male; D017537:Mesenteric Artery, Inferior / Q000002:abnormalities*; D008642:Mesenteric Veins / Q000002:abnormalities*; D014648:Varicose Veins / Q000209:etiology* / Q000601:surgery