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  • Title: Endovascular Treatments in Combination with Extracranial-Intracranial Bypass for Complex Intracranial Aneurysms.
    Author: Sato K, Endo H, Fujimura M, Endo T, Matsumoto Y, Shimizu H, Tominaga T.
    Journal: World Neurosurg; 2018 May; 113():e747-e760. PubMed ID: 29510287.
    Abstract:
    BACKGROUND: Although most intracranial aneurysms can be treated with microsurgery or endovascular procedure alone, a subset of aneurysms may require a combined approach. The purpose of this study was to assess the efficacy of endovascular interventions combined with bypass surgery for the treatment of complex intracranial aneurysms. METHODS: We retrospectively reviewed medical records from a prospectively maintained patient database to identify patients who underwent endovascular treatment of an intracranial aneurysm at our institutes between 2007 and 2017. We recruited patients who received a preplanned combination of endovascular treatment and extracranial-intracranial bypass surgery. RESULTS: Forty-four patients (44 aneurysms) were treated with a combined approach. Twenty-four patients presented with subarachnoid hemorrhage. Treatment strategies included endovascular parent artery occlusion with the bypass surgery to restore cerebral blood flow (n = 12), endovascular trapping with bypass surgery to isolate incorporated branches (n = 12), and intra-aneurysmal coil embolization with bypass surgery to isolate incorporated branches (n = 20). During a mean period of 35.6 months, follow-up catheter angiography was performed in 35 of 44 patients (79.5%) and demonstrated complete aneurysm obliteration in 29 patients (82.9%) and bypass patency in 33 (94.3%). The postoperative aneurysm-related mortality and morbidity rates were 6.8% and 13.6%, respectively. CONCLUSIONS: Combined endovascular and surgical bypass procedures are useful for the treatment of complex intracranial aneurysms when conventional surgical or endovascular techniques are not feasible and show acceptable rates of morbidity and mortality.
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