[Arteriovenous fistula of the vertebral artery: a rare complication following central venous catheterization. A case report].

Arteriovenous fistulas of the vertebral artery are in most cases caused by penetrating injuries. This report concerns a patient with ankylosing spondylitis, whose fistula most probably was brought about by puncture of the internal jugular vein for aorto-coronary-bypass surgery.