• J Clin Neurosci · May 2017

    Long-term follow-up analysis of microsurgical clip ligation and endovascular coil embolization for dorsal wall blister aneurysms of the internal carotid artery.

    • Mason A Brown, Cristian F Guandique, Jonathan Parish, Aubrey C McMillan, Stephen Lehnert, Nassir Mansour, Michael Tu, Bradley N Bohnstedt, Troy D Payner, Thomas J Leipzig, Andrew J DeNardo, John A Scott, and Aaron A Cohen-Gadol.
    • Goodman Campbell Brain and Spine, Indiana University, Department of Neurological Surgery, Indianapolis, IN, United States. Electronic address: brownmaa@iupui.edu.
    • J Clin Neurosci. 2017 May 1; 39: 72-77.

    AbstractBlister aneurysms at non-branching sites of the dorsal internal carotid artery (dICA) are fragile, rare, and often difficult to treat. The purpose of this study is to address the demographics, treatment modalities, and long-term outcome of patients treated for dICA blister aneurysms. A retrospective review of medical records identified all consecutive patients who presented with a blister aneurysm from 2002 to 2011 at our institution. Eighteen patients (M=7, F=11; mean age: 48.4±15.1years; range: 15-65years) harbored a total of 43 aneurysms, 25 of which were dorsal wall blister aneurysms of the ICA. Eleven (61.1%) patients presented with aneurysmal subarachnoid hemorrhage (aSAH), and 10 (55.6%) patients had multiple aneurysms at admission. Twelve patients had 18 aneurysms that were treated microsurgically. Five (41.7%) of these patients had a single recurrence that was retreated with subsequent repeat clip ligation. Six patients had 7 blister aneurysms that were treated with endovascularly. One (16.7%) of these patients had a single recurrence that was retreated with subsequent coil embolization. Postoperative vasospasm occurred in 8 (44.4%) patients, one of whom suffered from a stroke. This is one of the largest single-institution dICA blister aneurysm studies to date. There was no detected significant difference between microsurgical clip ligation and endovascular coil embolization in terms of surgical outcome. These blister aneurysms demonstrate a propensity to be associated with multiple cerebral aneurysms. Strict clinical and angiographic long-term follow-up may be warranted.Copyright © 2017 Elsevier Ltd. All rights reserved.

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