Atherosclerotic Vertebral Artery Disease in the Neck.

Atherosclerotic lesions are very common at the origin and first few centimeters of the vertebral artery in the neck. These lesions are often missed when using noninvasive diagnostic strategies. These lesions cause transient hypoperfusion and transient ischemic attacks, characterized mostly by vestibulocerebellar symptoms. Strokes are caused by embolism from these lesions. Patients with nonstenosing vertebral artery plaques should be treated with statins and antiplatelet agents. Symptomatic patients who have had embolism from an occluded vertebral artery should be treated with heparin followed by warfarin for a period of 4 to 12 weeks. Antiplatelet agents can then be given. The optimal treatment of asymptomatic and symptomatic patients with severe vertebral artery stenosis is unclear. Statins and warfarin are recommended for patients with concurrent stenotic lesions of the contralateral extracranial vertebral artery, the intracranial vertebral or basilar arteries, or the anterior circulation arteries. Balloon angioplasty or stenting will likely prove superior to surgery in those patients with severe stenosis who do not respond to medical treatment.