General Medical Information

Anterior Inferior Cerebellar Artery Thrombosis

Frank E. Lucente
Samir Shah
Roger Kula

Anterior inferior cerebellar artery thrombosis involves the tegmentum of the upper medulla, lower pons, restiform body, the lower part of the cerebellar peduncle, and the inferior surface of the cerebellar peduncle. The deficits include ipsilateral loss of facial pain, light touch and temperature sensations, ipsilateral Horner syndrome, ipsilateral deafness, vertigo, and ipsilateral facial palsy. The patient has ipsilateral cerebellar ataxia and a contralateral decrease in pain and temperature sensation in the limbs and trunk. This lesion may follow excision of acoustic neuroma.