• Lukas Goertz, Thomas Liebig, Eberhard Siebert, Lenhard Pennig, Kai Roman Laukamp, Erkan Celik, Marco Timmer, Gerrit Brinker, Marc Schlamann, Roland Goldbrunner, Franziska Dorn, Boris Krischek, and Christoph Kabbasch.
• Department of Radiology and Neuroradiology, Faculty of Medicine and University Hospital, University of Cologne, Cologne, Germany.
• Neurosurgery. 2021 Mar 15; 88 (4): 779-784.

BackgroundIntrasaccular flow-disruption represents a new paradigm in endovascular treatment of wide-necked bifurcation aneurysms.ObjectiveTo retrospectively compare Woven Endobridge (WEB) embolization with microsurgical clipping for unruptured anterior circulation aneurysms using propensity score adjustment.MethodsA total of 63 patients treated with WEB and 103 patients treated with clipping were compared based on the intention-to-treat principle. The primary outcome measures were immediate technical treatment success, major adverse events, and 6-mo complete aneurysm occlusion.ResultsThe technical success rates were 83% for WEB and 100% for clipping. Procedure-related complications occurred more often in the clipping group (13%) than the WEB group (6%, adjusted P < .01). However, the rates of major adverse events were comparable in both groups (WEB: 3%, clip: 4%, adjusted P = .53). At the 6-mo follow-up, favorable functional outcomes were achieved in 98% of the WEB embolization group and 99% of the clipping group (adjusted P = .19). Six-month complete aneurysm occlusion was obtained in 75% of the WEB group and 94% of the clipping group (adjusted P < .01).ConclusionMicrosurgical clipping was associated with higher technical success and complete occlusion rates, whereas WEB had a lower complication rate. Favorable functional outcomes were achieved in ≥98% of both groups. The decision to use a specific treatment modality should be made on an individual basis and in accordance with the patient's preferences.© Congress of Neurological Surgeons 2020.

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