title: The risk of endoleak following stent covering of the internal iliac artery during endovascular aneurysm repair.
abstract: OBJECTIVE
  To investigate the risk of endoleak during endovascular aneurysm repair (EVAR) involving the distal common iliac artery (CIA) when the internal iliac artery (IIA) is covered without prior coil embolization.
  
  
  METHODS
  Retrospective analysis of 145 (125 men, 20 women) consecutive EVAR cases. Clinical notes and radiological images were reviewed, and data collected on patient demographics, aneurysm morphology, covering of the IIA with or without embolization, presence of endoleaks, and patient symptoms relating to IIA ischaemia.
  
  
  RESULTS
  A total of 29 IIAs (10%) were covered in a total of 25 patients. Seven IIAs (24%) were embolized before stent covering (Embolization group), and 22 IIAs (76%) were covered only without embolization (Cover group). There was no statistically significant difference in the mean size of the abdominal aortic aneurysm diameter or CIA diameter between each group. No endoleaks from IIA retrograde filling were found in either group.
  
  
  CONCLUSIONS
  The results of the present study do not support the traditional view that coverage of the IIA without prior embolization carries a high risk of endoleak, with no endoleaks seen in all 22 cases. Large-scale trials are required. However, the advent of branched-stenting techniques and the emergence of their success in long-term follow-up may preclude the former.
authors: Department of Radiology, The Princess Alexandra Hospital, Hamstel Road, Harlow, Essex, CM20 1QX, UK. Electronic address: krajesparan@hotmail.com.
authors: K
authors: K
authors: Rajesparan
authors: Department of Radiology, The Princess Alexandra Hospital, Hamstel Road, Harlow, Essex, CM20 1QX, UK.
authors: W
authors: W
authors: Partridge
authors: Department of Surgery, The Princess Alexandra Hospital, Hamstel Road, Harlow, Essex, CM20 1QX, UK.
authors: J
authors: J
authors: Refson
authors: Department of Surgery, The Princess Alexandra Hospital, Hamstel Road, Harlow, Essex, CM20 1QX, UK.
authors: A
authors: A
authors: Abidia
authors: Department of Radiology, The Princess Alexandra Hospital, Hamstel Road, Harlow, Essex, CM20 1QX, UK.
authors: Z
authors: Z
authors: Aldin
mesh_terms: D000368:Aged; D001012:Aorta, Abdominal / Q000000981:diagnostic imaging / Q000601:surgery; D017544:Aortic Aneurysm, Abdominal / Q000601:surgery*; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects* / Q000379:methods*; D004621:Embolization, Therapeutic / Q000379:methods; D057867:Endoleak / Q000000981:diagnostic imaging* / Q000209:etiology*; D057510:Endovascular Procedures / Q000009:adverse effects* / Q000379:methods; D005260:Female; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging*; D008297:Male; D011859:Radiography; D012189:Retrospective Studies; D012306:Risk; D015607:Stents; D016896:Treatment Outcome