Vol.96 No.6 contentsPRACTICA OTO-RHINO-LARYNGOLOGICA
Vol. 96 No.6 June 2003
Anterior Inferior Cerebellar Artery Syndrome;
A Report of 3 Cases
Masakatsu Taki and Itaru Yamamichi
(Omihachiman City Hospital)
Tatsuhisa Hasegawa
(Nantan General Hospital)
Hiroshi Nakano, Satoshi Yamamoto, Toshihiro Suzuki and Yasuo Hisa
(Kyoto Prefectural University of Medicine)
Masataka Murakami
(Kyoto City Hospital)
Anterior inferior cerebellar artery (AICA) syndrome involves sudden hearing loss, vertigo, and several neurological symptoms and is being reported with increasing frequency due to diagnostic adavances. Herein, we describe 3 cases of anterior inferior cerebellar artery syndrome. Case 1 was a 67-year-old woman with sudden onset of vertigo. Initially, we treated her for sudden deafness with vertigo. Hearing loss improved almost completely by steroid and prostaglandin E1 administration. However, MRI demonstrated cerebellopontine infarction. Case 2 was a 53-year-old woman with hypertension and hyperlipidemia. She had dizziness and headache. CT and MRI demonstrated infarction of the cerebellum and brain stem. Hearing loss and dizziness were improved by steroid administration, control of blood pressure, and antithrombus therapy. She did not have cerebellar symptoms. Case 3 was a 58 year-old man with hypertension, who developed vertigo and vomiting. He demonstrated also hearing loss and ataxia. MRI demonstrated infarction of the cerebellum and brain stem, and otoneurological examination supported these findings. Vertigo and ataxia improved considerably. However, hearing loss was not completely improved. Steroid and prostaglandin E1 administration may improve hearing loss of anterior inferior cerebellar artery syndrome.
Key words : anterior inferior cerebellar artery syndrome, hearing loss, steroid