Arteriovenous Fistula at Scalp: Rapid Progression After Embolization of Contralateral Facial Arteriovenous Malformation

Multiple craniofacial arteriovenous malformations (AVM) are rare, and they are hemodynamically related to each other by complex and intercommunicating vascular networks. This report presents a case with two craniofacial AVMs located in anatomically different regions. One AVM changed in flow amount and venous drainage route after embolization of the other one, which may suggest a new guideline for treatment of multiple craniofacial AVMs