title: Long-term results after endovascular repair of abdominal aortic aneurysms with the Stentor and Vanguard stent-graft.
abstract: OBJECTIVE
  To present a single institution experience of long-term results after endovascular repair of abdominal aortic aneurysms (AAA) with the Stentor and Vanguard stent-grafts.
  
  
  METHODS
  Twenty-three patients (20 men, 3 women; mean age 68 years, range 53-81 years) were included in this prospective study. A first generation nitinol stent-graft (Stentor) was used in 12 patients and a second generation (Vanguard) in 11 patients. Follow-up was performed with magnetic resonance imaging (MRI) with contrast-enhanced MR angiography (CE MRA) at 1, 6, and 12 months, and thereafter annually (median follow-up 3 years; range 8 months to 8 years). A conventional radiograph of the abdomen was also performed. Before secondary intervention the findings on MRI with CE MRA were confirmed with spiral computed tomography (CT) and/or angiography (DSA).
  
  
  RESULTS
  Only one patient (4%) had no complication. Endoleak was found in 15 patients (65%), graft migration in 8 (35%), and graft deformation in 18 (78%). Secondary endovascular repair was required in 7 patients (30%) and 7 (30%) were converted to open repair.
  
  
  CONCLUSIONS
  Complications with the Stentor and Vanguard stent-grafts were common. Long-term follow-up of endovascularly repaired AAA is mandatory.
authors.affiliation: Department of Radiology, Lund University Hospital, Malmö University Hospital, Sweden.
authors.forename: L
authors.initials: L
authors.lastname: Engellau
authors.forename: U
authors.initials: U
authors.lastname: Albrechtsson
authors.forename: L
authors.initials: L
authors.lastname: Norgren
authors.forename: E M
authors.initials: EM
authors.lastname: Larsson
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000497:Alloys; D001012:Aorta, Abdominal / Q000000981:diagnostic imaging / Q000473:pathology; D017544:Aortic Aneurysm, Abdominal / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000628:therapy*; D005260:Female; D005500:Follow-Up Studies; D005548:Foreign-Body Migration / Q000175:diagnosis; D006801:Humans; D007091:Image Processing, Computer-Assisted; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011860:Radiography, Abdominal; D015607:Stents / Q000009:adverse effects; D013927:Thrombosis / Q000175:diagnosis / Q000209:etiology; D036542:Tomography, Spiral Computed; D016896:Treatment Outcome
chemical_list: D000497:Alloys; C013616:nitinol