Evaluation of the GORE® EXCLUDER® Iliac Branch Endoprosthesis

Inclusion Criteria: 1. Common iliac aneurysm with or without concomitant abdominal aortic aneurysm 2. Adequate native anatomy to receive the EXCLUDER® and Iliac Branch Endoprostheses 3. An Informed Consent Form signed by Subject or legally authorized representative 4. Male or infertile female 5. Able to comply with protocol requirements including following-up 6. Life expectancy \> 2 years 7. Age \> 21 years 8. Surgical candidate Exclusion Criteria: 1. Mycotic or ruptured aneurysm 2. Known concomitant thoracic aortic aneurysm which requires intervention 3. American Society of Anesthesiologists (ASA) Physical Status classification system class V (moribund patient not expected to live 24 hours with or without operation) 4. Renal insufficiency defined or patient undergoing dialysis 5. New York Heart Association (NYHA) Functional Classification class IV 6. Dissected, heavily calcified, or heavily thrombosed landing zone(s) 7. Tortuous or stenotic iliac and/or femoral arteries 8. Participating in another investigational device or drug study within 1 year of treatment 9. Systemic infection which may increase the risk of endovascular graft infection 10. Known degenerative connective tissue disease, e.g., Marfan or Ehler-Danlos Syndrome 11. Planned concomitant surgical procedure or major surgery within 30 days of treatment date 12. Known history of drug abuse 13. Known sensitivities or allergies to the device materials