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A 72 year-old man presented with nausea, vomiting and an unsteady gait. On examination, he was discovered to have a left sided visual field abnormality.
(Left) Angiogram of the right subclavian artery. Note the high grade stenosis of the origin of the vertebral artery. (Right) Diffusion weighted MRI images - note the areas of acute infarction in the rostal cerebellum and right occipital lobe. This lesion was the cause of the patient's symptoms and was successfully treated by stent placement.
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