Abstract
A 66-year-old man complaining of vertigo with acute hearing loss and tinnitus of the right ear visited our hospital. An MRI examination showed a lesion suggesting an anterior inferior cerebellar artery (AICA) territory infarction. An otoneurological examination revealed a sensorineural hearing loss of the right ear and horizontal and rotatory gaze nystagmus toward the left. Although an inner ear disorder was not suspected as the cause of vertigo, an MRI examination seemed to be indicated based on the neurological symptoms and nystagmus findings to rule-out a possible disorder of the central neruous system. Neurological and MRI examinations are important for distinguishing cerebellar infarction from inner ear disease.
