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Meningioma of the internal auditory canal: a case report

Wandee Khaimook1, Siriporn Hirunpat, Chawaboon Dejsukum

  • 1Department of Otolaryngology Head and Neck Surgery, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkla 90112, Thailand.

Journal of the Medical Association of Thailand = Chotmaihet Thangphaet
|February 14, 2006
PubMed

Insights

Meningiomas within the internal auditory canal are exceptionally rare, with only 15 prior cases documented. This report details a unique case of intracanalicular meningioma, highlighting its presentation and successful surgical management.

Area of Science:

  • Neurology
  • Neurosurgery
  • Otolaryngology

Background:

  • Meningiomas, typically benign tumors arising from meningeal cells, rarely occur within the internal auditory canal (IAC).
  • Intracanalicular meningiomas represent a small subset of these tumors, posing diagnostic and surgical challenges due to their location.

Observation:

  • A 31-year-old female presented with a year-long history of headache, dizziness, hearing loss, and left facial paralysis.
  • Magnetic Resonance Imaging (MRI) of the temporal bone revealed a small, isointense intracanalicular tumor with heterogeneous enhancement.

Findings:

  • Surgical exploration via a translabyrinthine approach confirmed a tumor confined to the IAC without intracranial extension.
  • Histopathological examination definitively diagnosed the tumor as a meningioma.

Implications:

  • This case adds to the scarce literature on intracanalicular meningiomas, emphasizing their potential for varied clinical presentations.
  • The successful surgical resection and 2-year follow-up without recurrence underscore the efficacy of appropriate surgical approaches for these rare tumors.

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