Unusual lesions of the internal auditory canal

Author(s): Chole, R. A.

Journal/Book: Amer J Otology. 1996; 17: 4 Hughson St, PO Box 620, LCD 1, Hamilton on L8N 3K7, Canada. Decker Periodicals Inc. 143-149.

Abstract: Tumor types other than acoustic neuromas are uncommonly encountered in the cerebellopontine angle, and unusual lesions limited to the internal auditory canal (IAC) are even more rare. We present five patients with unusual tumors of the IAC including two meningiomas, two arachnoid cysts, and a hemangioma. These unusual tumors, and lipomas, are discussed. Particular attention is paid to the pathophysiology of the lesions and treatment recommendations. The differential diagnosis of intracanalicular lesions using magnetic resonance imaging is also presented.

Note: Article RA Chole, Univ Calif Davis, Med Ctr, Sch Med, Dept Otolaryngol Head & Neck Surg, Otolaryngol Res Lab, Davis, CA 95616 USA

Keyword(s): internal auditory canal; meningioma; arachnoid cyst; hemangioma; ACOUSTIC NEUROMA; CEREBELLOPONTINE ANGLE; TEMPORAL BONE; HEMANGIOMAS; LIPOMA; MENINGIOMAS; TUMORS

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