Abstract 334: Narrative Review of the Incidence, Course and Treatment of In Stent Stenosis after Flow Diverter Placement

Flow diversion has evolved as a standard treatment for aneurysms with giant, wide necked or fusiform morphology. Flow Diverters promote aneurysm treatment by intrasaccular stasis and thrombus formation within the aneurysm and endothelialization of the stent leading to reconstruction of the parent artery1. In stent stenosis (ISS) of the parent artery is one complication with flow diverters. We aim to describe the incidence, definition, radiographic and clinical courses and treatment paradigms as described in the literature.