E-144 The presence of cerebral edema in addition to retrograde leptomeningeal venous drainage in cranial dural arteriovenous fistulas is an indicator of clinical severity

Flow diversion of intracranial aneurysms with the Pipeline embolization device is commonly performed, but the value of long-term angiographic follow-up has not been rigorously evaluated. Here, we examine the prevalence of actionable findings of aneurysm recurrence and develop-ment of in-stent stenosis in a cohort of patients that underwent long-term angiographic follow-up at multiple timepoints. later Pertinent findings of aneurysm occlusion of stenosis at final follow-up strati-fied based on findings on 6 month angiography. final