TY - JOUR T1 - Delayed Spontaneous Rupture of a Posterior Inferior Cerebellar Artery Aneurysm Following Treatment with Flow Diversion: A Clinicopathologic Study JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. DO - 10.3174/ajnr.A2532 AU - M. Chow AU - C. McDougall AU - C. O'Kelly AU - R. Ashforth AU - E. Johnson AU - D. Fiorella Y1 - 2011/08/10 UR - http://www.ajnr.org/content/early/2011/08/11/ajnr.A2532.abstract N2 - SUMMARY: In this report, we present the fatal spontaneous delayed rupture of a previously unruptured large PICA aneurysm following treatment with the PED. Pathology at postmortem examination has supported the theory that intra-aneurysmal thrombus may acutely destabilize the aneurysm wall. Aneurysms with an anatomic arrangement that promote continued flow into the neck may not be optimal candidates for the flow-diversion treatment strategy. ER -