Isolated Common Iliac Artery Aneurysms Treated Solely With Iliac Branch Stent-Grafts: Midterm Results of a Multicenter Registry

J Endovasc Ther. 2018 Apr;25(2):169-177. doi: 10.1177/1526602818754862. Epub 2018 Jan 31.

Abstract

Purpose: To assess early and midterm outcomes of iliac branch device (IBD) implantation without an aortic stent-graft for the treatment of isolated common iliac artery aneurysm (CIAA).

Methods: From December 2006 to June 2016, 49 isolated CIAAs in 46 patients were treated solely with an IBD at 7 vascular centers. Five patients were lost to follow-up, leaving 41 male patients (mean age 72.5±7.8 years) for analysis. Mean CIAA diameter was 39.1±10.5 mm (range 25-65). Thirty-two patients (2 with bilateral CIAAs) were treated with a Cook Zenith iliac branch device; 9 patients (1 bilateral) received a Gore Excluder iliac branch endoprosthesis. Primary endpoints were technical success, survival, aneurysm exclusion, device patency, and freedom from reintervention at 1 and 5 years. Freedom from major adverse events and aneurysm shrinkage at 1 year were also assessed.

Results: Thirty-day mortality and the IBD occlusion rate were 2.4% and 2.3%, respectively. At a mean follow-up of 40.2±33.9 months, no patient presented buttock claudication, erectile dysfunction, or bowel or spinal cord ischemia. Three patients died within 6 months after the procedure. Estimates of cumulative survival, device patency, and freedom from reintervention were 90.2%, 95.2%, and 95.7%, respectively, at 1 and 5 years. At 1 year, CIAA shrinkage ≥5 mm was recorded in 21 of 38 survivors. No evidence of endoleak, device migration, or disconnection was found on imaging follow-up.

Conclusion: The use of IBDs without an aortic stent-graft for isolated CIAAs resulted in excellent patency, with low morbidity and mortality. This, in conjunction with no endoleak or migration and a low reintervention rate, supports the use of isolated IBDs as a stable and durable means of endovascular reconstruction in cases with suitable anatomy. Longer follow-up and a larger cohort are needed to validate these results.

Keywords: aneurysm; common iliac artery; endovascular repair; iliac artery aneurysm; iliac branch device; iliac branched stent-graft; internal iliac artery.

Publication types

  • Multicenter Study

MeSH terms

  • Aged
  • Blood Vessel Prosthesis Implantation / adverse effects
  • Blood Vessel Prosthesis Implantation / instrumentation*
  • Blood Vessel Prosthesis Implantation / mortality
  • Blood Vessel Prosthesis*
  • Endovascular Procedures / adverse effects
  • Endovascular Procedures / instrumentation*
  • Endovascular Procedures / mortality
  • Female
  • Humans
  • Iliac Aneurysm / diagnostic imaging
  • Iliac Aneurysm / mortality
  • Iliac Aneurysm / physiopathology
  • Iliac Aneurysm / surgery*
  • Italy
  • Male
  • Postoperative Complications / mortality
  • Postoperative Complications / therapy
  • Progression-Free Survival
  • Prosthesis Design
  • Registries
  • Retrospective Studies
  • Risk Assessment
  • Risk Factors
  • Stents*
  • Time Factors
  • Vascular Patency