Arteriovenous malformation (AVM) rarely develops in the oral and maxillofacial region. We encountered one case of AVM in the maxillofacial region. The case was diagnosed in a 32-year-old pregnant woman. Massive hemorrhage occurred two times. Because the condition of the fetus deteriorated, emergency caesarean section was performed. Magnetic resonance imaging showed a hypervascular lesion in the right mandibular region, and AVM was demonstrated on angiography. After transcatheter arterial embolization of the feeding arteries, the lesion resolved.
