Stereotactic Radiation Therapy for an Arteriovenous Malformation of the Oral Tongue: A Teaching Case

Arteriovenous malformations (AVMs) are congenital vascular anomalies resulting in a direct connection between feeding arteries and draining veins. This results in a high-flow nidus, which is commonly progressive and can become life-threatening.1 Over 90% of AVMs are intracranial.2 Head and neck AVMs represent almost 50% of extracranial AVMs3 and most commonly occur within the face or mandible. Lingual AVMs are quite rare.4