Abstract
The diffusion-weighted MRI (DWI) showed a small, subacute right middle cerebellar peduncle infarct in the territory of the anterior inferior cerebellar artery (AICA) without brainstem infarction (Fig. 1). Audiometry showed a total right hearing loss with normal hearing on the left; caloric testing showed absent responses from the right. CT angiography revealed only right vertebral artery hypoplasia. He was given anti-hypertensive treatment and aspirin. One year later he still had a total right hearing loss, positive rightward Head Impulse Test, a positive Romberg test standing on foam and absent caloric responses from the right.
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