De novo aneurysm formation of a feeder artery after embolization of a dural arteriovenous fistula and rupture during second embolization

Abstract

<jats:sec><jats:title>Objective</jats:title><jats:p> Hemorrhage during embolization of dural arteriovenous fistula (DAVF) is a rare but devastating complication. This study was undertaken to analyze the causes of hemorrhage and avoid complication. </jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p> The clinical data of a case of DAVF with hemorrhagic complication were retrospectively collected and analyzed. </jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p> The patient in this case presented with DAVF and two de novo aneurysms of a feeder artery after the first embolization. One de novo aneurysm ruptured during the second embolization of the DAVF because of hemodynamic change. Computed tomography showed a subdural hematoma, and surgical exploration was emergently performed. However, the patient died at postoperative day 10. </jats:p></jats:sec><jats:sec><jats:title>Conclusions</jats:title><jats:p> De novo aneurysm of a feeder artery may form after embolization of DAVF because of hemodynamic change. It has a high risk of rupture and should be a primary consideration in embolization of DAVF. </jats:p></jats:sec>