Presentation
Vertigo with loss of equilibrium.
Patient Data
Age: 16 years
Gender: Female
From the case:
Internal auditory canal exostosis
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Wide-based bony growth arising from the anterosuperior aspect of the left internal auditory canal protruding into its lumen, causing narrowing of the porus acoustics.
Case Discussion
CT features most consistent with Internal auditory canal (IAC) exostosis causing narrowing of the porus acoustics in a patient with vertigo and loss of equilibrium.
Internal auditory canal (IAC) exostosis is defined as a bony growth that can narrow the IAC lumen, sometimes causing neurological symptoms due to nerve compression.
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