[Contribution of ultrasonic examinations to the detection of a posttraumatic vertebral arteriovenous fistula].

A case of extracranial vertebral arteriovenous fistula is reported. The patient was a 26 year-old female who had been submitted to a direct transcutaneous vertebral angiography 20 years before and had a noise in the neck discovered per chance during a clinical examination. Ultrasound usefulness to detect and to follow the evolution of such fistulas is emphasized. Clinical features and treatment are discussed.