Unusual lesions of the internal auditory canal

Pamela S. Bohrer, Richard A. Chole

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56 Scopus citations


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.

Original languageEnglish
Pages (from-to)143-149
Number of pages7
JournalAmerican Journal of Otology
Issue number1
StatePublished - Apr 9 1996


  • Arachnoid cyst
  • Hemangioma
  • Internal auditory canal
  • Meningioma


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