Impact of Accessory Renal Arteries on Type II Endoleak–Related Complications After Endovascular Treatment of Complex Aortic Aneurysms

The presence of at least one aRA ≥2 mm is associated with an increased risk of persistent T2EL, sac expansion, and need for reinterventions.Clinical ImpactIn this single-centre series of 199 consecutive F/BEVAR procedures, accessory renal arteries ≥2 mm were independently associated with an increased risk of aneurysm sac expansion and subsequent reintervention. In particular, accessory renal arteries originating from the aneurysm sac were correlated with treatment failure and should be considered for preemptive embolization at the time of the index procedure.