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Operative Neurosurgery:
doi: 10.1227/NEU.0000000000000438
Technical Case Report

Twenty-Year Follow-up of Flow Reversal and Revascularization for a Giant Serpentine Basilar Artery Aneurysm

Kalani, M. Yashar S. MD, PhD; Zabramski, Joseph M. MD; Nakaji, Peter MD; Spetzler, Robert F. MD

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Abstract

BACKGROUND AND IMPORTANCE: Current microsurgical and endovascular therapies have offered little advancement for the treatment of complex vertebrobasilar aneurysms. The outcome of patients with these rare lesions has remained poor, despite sometimes heroic measures.

CLINICAL PRESENTATION: The authors report a case of a 65-year-old man who 20 years earlier had presented with symptoms suggestive of brainstem compression. Imaging at the time revealed a giant, serpentine aneurysm of the basilar artery. The patient was treated with superficial temporal artery to superior cerebellar artery bypass and decompression of the aneurysm contents. Twenty years after this treatment, the patient remains functionally intact with few sequelae from his treatment or the pathology. Follow-up imaging reveals thrombosis of the aneurysm without ischemic damage to the brainstem.

CONCLUSION: This case demonstrates that good functional outcomes are possible for select complex posterior circulation aneurysms by using flow reversal and revascularization; however, at this time, we are unable to predict for which patients this strategy will be successful.

ABBREVIATIONS: BTO, balloon test occlusion

SCA, superior cerebellar artery

STA, superficial temporal artery

© 2014 by Lippincott Williams & Wilkins, Inc.

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