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Intracochlear schwannoma: Imaging diagnosis
Safaa Choayb1, Yahya El Harras1, Meriem Fikri1
1Neuroradiology Department, Ibn Sina University Hospital Center, Rabat, Morocco.
Journal of Otology
|May 8, 2023
Summary
Intralabyrinthine schwannomas (ILS) are rare tumors causing hearing loss. MRI imaging is crucial for diagnosing these inner ear growths, as demonstrated in a case of sensorineural deafness.
Area of Science:
- Neuro-oncology
- Radiology
- Otolaryngology
Background:
- Intralabyrinthine schwannomas (ILS) are uncommon, benign tumors originating within the inner ear.
- These tumors are a recognized cause of sensorineural hearing loss and other auditory symptoms.
Purpose of the Study:
- To highlight the diagnostic utility of Magnetic Resonance Imaging (MRI) in identifying intralabyrinthine schwannomas.
- To present a clinical case illustrating the presentation and MRI findings of an intracochlear schwannoma.
Main Methods:
- Case report of a 48-year-old female patient with a 3-year history of right-sided sensorineural deafness.
- Review of diagnostic imaging, specifically MRI, to evaluate the inner ear structures.
Main Results:
- MRI revealed a characteristic loss of the normal T2-weighted hypersignal in the second turn of the right cochlea.
- This finding was consistent with the presence of an intracochlear schwannoma.
Conclusions:
- Intralabyrinthine schwannomas, particularly intracochlear variants, can present insidiously with sensorineural hearing loss.
- MRI is an essential imaging modality for the accurate diagnosis of ILS, enabling early detection and management.
