Presentation
Recurrent dizziness. Falls following sudden left side hearing 8 months ago. Clear ENT exam. Significant left side hearing asymmetry. MRI to rule out IAM/CPA or intracranial abnormalities.
Patient Data
Age: 80 years
Gender: Female
From the case:
Acoustic schwannoma
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1.8 cm left cerebellopontine mass with intracannilicular extension.
Background moderate small vessel ischemic disease.
Case Discussion
Large numbers of MRIs of the internal auditory meatus (IAMs) are undertaken, in large part to assess for vestibular schwannoma. They can be at the cerebellopontine angle, purely intracanalicular, or as in this case involve both.
Most centers now do a T2 3D sequence through the internal auditory meati which exquisitely illustrates the vestibulocochlear nerves.