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Intracanalicular meningioma
D H Dinh1, S B Clark, M Whitehead
1Department of Neurosurgery, Tulane University School of Medicine, New Orleans, LA 70112, USA.
Abstract:
Intracanalicular meningiomas are extremely rare and difficult to differentiate from intracanalicular vestibular schwannomas. We report an unusual case of a posterior fossa meningioma in the proximal internal auditory canal that was originally diagnosed as a vestibular schwannoma due to its appearance on magnetic resonance imaging. However, closer inspection of the preoperative neuroimages revealed features inconsistent with vestibular schwannoma that suggested the possibility of other less common lesions.
Insights
Intracanalicular meningiomas are rare tumors that mimic vestibular schwannomas on MRI. This case highlights subtle imaging features that can suggest meningioma over schwannoma.
Area of Science:
- Neurosurgery
- Neuroradiology
- Neuropathology
Background:
- Intracanalicular meningiomas are rare tumors.
- Differentiating them from vestibular schwannomas is challenging.
- Vestibular schwannomas are the most common tumors of the internal auditory canal.