Isolated vertigo and imbalance due to deep border zone cerebellar infarct

Right deep border zone cerebellar infarct with ipsilateral proximal large artery disease

Axial (A) diffusion-weighted imaging displays acute deep infarct at the boundary zone between medial and lateral branch of the right posterior inferior cerebellar artery. Anterior (B) and lateral (C) views of CT angiography show occlusion of right vertebral artery and stenosis of right subclavian artery (arrows).