title: Aortoenteric fistula due to endoleak coil embolization after endovascular AAA repair.
abstract: OBJECTIVE
  To report a late complication associated with embolization coils used to treat an endoleak after endovascular abdominal aortic aneurysm (AAA) repair.
  
  
  METHODS
  A 79-year-old man with a 5.8-cm AAA underwent endovascular repair with an Ancure graft in 1997. A persistent type I endoleak was identified on serial postoperative computed tomographic scans. Three transarterial coil embolization procedures were performed to treat an endoleak from the proximal and right distal attachment sites with outflow by the inferior mesenteric and lumbar arteries. Coil embolization was ultimately successful in sealing the endoleak, and the AAA decreased in size. Four years later, the patient developed an aortoenteric fistula due to erosion of the metallic embolization coils into the duodenum. The endograft was explanted and an extra-anatomical bypass inserted.
  
  
  CONCLUSIONS
  Coil embolization to treat endoleaks can, on rare occasions, be the cause of aortoenteric fistula. Lifelong follow-up of stent-graft patients is required.
authors.affiliation: Division of Vascular Surgery, University of Pittsburgh Medical Center, Pennsylvania, USA.
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Bertges
authors.forename: Edward R
authors.initials: ER
authors.lastname: Villella
authors.forename: Michel S
authors.initials: MS
authors.lastname: Makaroun
mesh_terms: D000368:Aged; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging / Q000601:surgery*; D001018:Aortic Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D019917:Blood Vessel Prosthesis Implantation; D004621:Embolization, Therapeutic / Q000009:adverse effects*; D006801:Humans; D007412:Intestinal Fistula / Q000000981:diagnostic imaging / Q000209:etiology*; D008297:Male; D017537:Mesenteric Artery, Inferior / Q000000981:diagnostic imaging; D011183:Postoperative Complications; D014057:Tomography, X-Ray Computed; D016157:Vascular Fistula / Q000000981:diagnostic imaging / Q000209:etiology*