Delayed Type III Endoleak after EVAR for Abnominal Aneurysm

Abstract

We report our experience of 2 cases with a conversion to laparotomy when diameter reduction of aneurysm was once recognized after stent grafting, but somehow it became larger again. The advancement of stent graft expands more choices of aortic aneurysm treatment and the long-term favorable outcomes are also reported so far. However, the number of retreatment requirement cases with complications such as endoleak has been increasing. In the present study, we have experienced a conversion to laparotomy in two cases. We preoperatively evaluated both cases as type II endoleak, but actually diagnosed it as type IIIb endoleak in the intraoperative finding. Type IIIb endoleak caused by defect of inserted fabric device is still a rare case up to the present.