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Year : 2018  |  Volume : 30  |  Issue : 2  |  Page : 110-115

Superficial temporal artery-middle cerebral artery bypass for the treatment of complex middle cerebral artery aneurysms

Department of Neurosurgery, Buddhist Tzu Chi General Hospital and Tzu Chi University, Hualien, Taiwan

Correspondence Address:
Dr. Tsung-Lang Chiu
Department of Neurosurgery, Buddhist Tzu Chi General Hospital, 707, Section 3, Chung-Yang Road, Hualien
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/tcmj.tcmj_193_17

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Objectives: Direct microsurgical clipping for complex middle cerebral artery (MCA) aneurysms may require a long ischemic time. Sacrifice of the parent artery with trapping or endovascular coiling also may lead to ischemic stroke. We described our institutional experience with the treatment of complex MCA aneurysms using extracranial-intracranial (EC-IC) (superficial temporal artery [STA]-MCA) bypass. Materials and Methods: We retrospectively reviewed patients who had treatment of IC aneurysms with the assistance of STA-MCA bypass from July 2002 to December 2016. Six patients with complex MCA aneurysms were identified, and we reviewed their clinical characteristics. Results: There were three men and three women with age ranging from 27 to 59 (mean 49) years old. Image studies showed subarachnoid hemorrhage in three cases. All patients underwent STA-MCA anastomosis, and the follow-up period ranged from 2 to 116 months (mean 51.5 months). Two of the six MCA aneurysms were fusiform, two aneurysms had bizarre configurations, one was a dissecting saccular aneurysm, and one had a blister configuration. Three patients received direct vessel trapping, two patients received aneurysm clipping, and one received aneurysm coiling. The postoperative bypass patency rate was 100%. The modified Rankin scale showed good outcomes in the six patients. Conclusions: EC-IC bypass plays an important role as a salvage procedure in the treatment of complex MCA aneurysms which have a fusiform, bizarre, or blister configuration.

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