Vertigo and Acute Sensorineural Hearing Loss Cased by Anterior Inferior Cerebellar Artery Infarction. A Case Report.:A CASE REPORT
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概要
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We report a patient with vertigo and acute sensorineural hearing loss due to infarction involving the anterior-inferior cerebellar artery (AICA). A 65-year-old woman reporting sudden-onset vertigo and severe unilateral hearing loss without other neurological deficits had a history of hypertension. Neurootological examination showed a rotatory, positional, spontaneous, and gaze nystagmus toward the left. Right facial and trigeminal nerve paralysis appeared 2 days later. Based on these findings, we suspected a brain stem lesion. Computed tomography (CT) and magnetic resonance imaging (MRI) showed a pontine infarction in the AICA, so the patient was diagnosed with AICA hearing syndrome. In some cases, the clinical signs of AICA syndrome are similar to those of inner ear disorders. Neurootological signs, nystagmus, and MRI are clinically useful in distinguishing AICA syndrome from inner ear diseases.
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