Transarterial Onyx Embolization of Residual Arteriovenous Malformation After Surgical Resection.

Objective: We sought to report transarterial Onyx embolization of residual brain arteriovenous malformation (AVM) after surgical resection.

Methods: From January 2017 to January 2019, 7 patients with residual AVM after surgery were treated by transarterial Onyx embolization. Demographics, angioarchitectural characteristics, complications, and results were retrospectively reviewed.

Results: All patients presented initially with a ruptured AVM. Residual AVM was found on control angiograms within 1 month after surgery. All residual AVMs were cured by transarterial Onyx embolization. One patients experienced feeding artery perforation without adding new neurologic deficits.

Conclusions: Complete obliteration of residual AVMs can be obtained by salvage transarterial Onyx embolization.