Abstract
Arteriovenous malformations （AVM） are vascular malformations, characterized by direct communication between arteries and veins, lacking a normal capillary network. We describe a rare case of AVM of the lower lip. A woman in her 60s was referred to our department because of swelling and contact pain of the lower lip. The size of the lesion was that of the little finger, the head was large, and pulsation was felt on palpation of the lip. The lesion was preoperatively diagnosed as AVM by computed tomography angiography （CTA）, magnetic resonance imaging （MRI） and digital subtraction angiography （DSA）. Though we planned to perform surgical resection following endovascular embolization, it seemed to be difficult to embolize the right facial artery （feeding artery） because the artery was highly tortuous. Therefore, we ligated it and resected the AVM. Recurrence has not occurred as of about 4 years after surgery.
