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This is a retrospective study of all ruptured and unruptured aneurysms that were treated with a WEB device (WEB Dual-Layer, Single-Layer, and Single-Layer Sphere) between April 2012 and August 2014 at 2 centers. Fifty-five aneurysms in 52 patients, including 14 ruptured aneurysms, underwent treatment with the WEB device. A favorable angiographic result at 3 months was achieved in 66% of cases, whereas the percentage of good anatomic results increased from 40% in 2012 to 75% in 2014.

Seventeen studies with 478 patients were included in this analysis, evaluating immediate occlusion, long-term occlusion, long-term good neurologic outcome, perioperative morbidity, perioperative mortality, rebleed (ruptured only), recurrence, and retreatment. Endovascular treatment of vertebrobasilar dissecting aneurysms showed high rates of complete occlusion and good long-term outcomes.