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  • Title: Endovascular reconstruction of unruptured intradural vertebral artery dissecting aneurysms with the Pipeline embolization device.
    Author: Kühn AL, Kan P, Massari F, Lozano JD, Hou SY, Howk M, Gounis MJ, Wakhloo AK, Puri AS.
    Journal: J Neurointerv Surg; 2016 Oct; 8(10):1048-51. PubMed ID: 26546600.
    Abstract:
    BACKGROUND: Dissecting aneurysms of the vertebral artery (VA) are difficult to treat using current surgical and endovascular techniques. OBJECTIVE: To analyze retrospectively the efficacy and safety of flow diverters in the treatment of dissecting aneurysms of the vertebral artery. METHODS: We identified six patients with six unruptured VA dissecting aneurysms either arising from the V4 or V3-V4 junction that were treated with the Pipeline embolization device (PED) at our institution between July 2012 and February 2015. Among other parameters, technical feasibility of the procedure, procedure-related complications, angiographic results, and clinical outcome were evaluated. RESULTS: PED placement was achieved in all cases and immediate angiography follow-up demonstrated intra-aneurysmal contrast stasis with parent artery preservation. A temporary episode of dysarthria was noted in one patient. Major procedure-related complications were not observed. The 6-month follow-up (n=6) demonstrated complete/near-complete aneurysm obliteration in five patients and partial obliteration in one. At the 1-year follow-up (n=5) stable complete aneurysm occlusion was seen in two patients. Two cases showed progression from near complete occlusion and partial occlusion at 6 months to complete occlusion and near complete occlusion. One cases showed unchanged near complete occlusion. No aneurysmal bleeding, in-stent stenosis or thromboembolic complication was seen. National Institutes of Health Stroke Scale and modified Rankin scale scores remained unchanged from admission to discharge. CONCLUSIONS: Our preliminary experience with the use of PED for the treatment of intradural VA dissecting aneurysms shows promising short-term results, making this technique a feasible and safe treatment option in patients suitable for this approach. However, long-term and larger cohort studies are needed to validate these results.
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