Dolichoectasia describes enlarged, tortuous, and dilated arteriopathy which mainly involves vertebral and basilar arteries. Clinical expression includes from asymptomatic to malignant disease like infarction and intracranial bleeding. Anterior inferior cerebellar artery infarction is rare disease and can cause sudden deafness, vertigo, facial palsy, tinnitus, ipsilateral gaze palsy, loss of facial thermal sense, ipsilateral Horner's syndrome, and cerebellar ataxia. Sudden deafness without

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... l symptoms is rare manifestation of anterior inferior cerebellar artery infarction. We experienced a case of sudden deafness caused by anterior inferior cerebellar artery infarction secondary to basilar artery dolichoectasia.