• Neurological research · Apr 2014

    Review Case Reports

    Oversized self-expanding stents as an alternative to flow-diverters for blister-like aneurysms.

    • Ryan A Grant, Jennifer L Quon, and Ketan R Bulsara.
    • Neurol. Res. 2014 Apr 1; 36 (4): 351-5.

    ObjectiveBlister-like aneurysms (BLAs) are challenging to treat. Their friable nature makes them high risk for both traditional microsurgical and endovascular treatments. We discuss employing a single oversized self-expanding stent in the treatment of these treacherous lesions.MethodsA retrospective review from our institution was conducted. Five patients with BLAs were identified, who went on to be treated with a single oversized self-expanding stent, defined as 1 mm larger than the parent vessel, by the senior author (KRB), who is dual fellowship trained in both cerebrovascular/skull base microsurgery and endovascular neurosurgery. Additionally, a literature review was performed on BLAs treated with sole stenting and outcomes discussed.ResultsOur five patients had complete aneurysm occlusion at long-term follow-up and all had good neurological outcomes. The literature review demonstrated that most aneurysms at long-term follow-up were either completed occluded or progressively becoming occluded, with patients overall having a good functional outcome based on the modified Rankin scale (mRS).ConclusionIn our experience, oversized self-expanding stents are a treatment option that should be considered for BLAs. This strategy avoids the need for dual antiplatelet therapy and therefore increases its utility in the case of subarachnoid hemorrhage (SAH).

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