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Type II endoleak is the most common complication after endovascular abdominal aortic aneurysm repair (EVAR); however, its natural history is unclear. The aim of this study was to examine the incidence and outcomes of type II endoleak, at a single institution after EVAR.

A total of 904 consecutive patients who underwent EVAR between September 1995 and July 2013 at a single centre were entered onto a prospective database. All patients were followed up by duplex ultrasound (DUSS). Patients who developed type II endoleak were compared for preoperative demographics, mortality, and sac expansion.

A total of 175(19%) patients developed type II endoleak over a median follow-up of 3.6 years (1.5–5.9 years); 54% of type II endoleaks spontaneously resolved within 6 months (0.25–1.2 years). No difference was found in preoperative demographics or choice of endograft between the two …