Iliac-enteric fistula managed by endovascular covered stent placement using extra-vascular microwire snaring: a case report

CVIR Endovasc. 2020 Mar 23;3(1):18. doi: 10.1186/s42155-020-00109-2.

Abstract

Background: Although snaring technique is a commonly used tool in the interventional radiologists' armamentarium, there are no reports of its use in an extra-vascular space to achieve access across a pseudoaneurysm that was otherwise non-traversable.

Case presentation: We describe a case of an iliac-enteric fistula between a ruptured pseudoaneurysm of the external iliac artery and a surrounding contained colonic perforation, where access across the pseudoaneurysm was achieved only after snaring of the microwire from within the contained colonic perforation and back into the intra-vascular space, allowing the placement of a covered stent and control of the bleeding.

Conclusions: The described technique may be useful in situations where other, more conventional, endovascular techniques fail to achieve access across the bleeding pseudoaneurysm. While it was life-saving in this case, this technique should only be used in very limited scenarios, specifically in the palliative setting and when surgical management is not an option.

Keywords: Covered stent; Extra-vascular; Iliac-enteric fistula; Pseudoaneurysm; Snare.