A Case of Transmodiolar Intralabyrinthine Schwannoma (ILS) in a 51-Year-Old Woman
DOI:
https://doi.org/10.32412/pjohns.v40i2.2515Keywords:
intralabyrinthine, schwannoma, transmodiolar, intracochlear, vestibular, labyrinthineAbstract
Objective: To highlight the clinical presentation, diagnostic dilemma and proposed management of a case of a transmodiolar intralabyrinthine schwannoma.
Methods:
Design: Case Report
Setting: Tertiary National University Hospital
Patient: One
Results: A 51-year-old woman consulted for a 12-year history of unilateral sensorineural hearing loss and progressively worsening vertigo. Workups revealed a hyperintense lesion approximating the entire right cochlea on Gadolinium-enhanced magnetic resonance imaging and profound hearing loss on the right on pure-tone audiometry, with no recordable response even at maximum intensity levels across all frequencies. Infectious and metastatic workups returned negative results, clinching the radiographic diagnosis of an intralabyrinthine schwannoma.
Conclusion: Intralabyrinthine schwannomas (ILS) are rare, benign neoplasms of the 8th cranial nerve, manifesting as progressive unilateral sensorineural hearing loss and worsening vertigo. These neoplasms are mainly detected by MRI; underdiagnosis and lack of standard treatment and diagnostic protocols result in their inaccurate diagnosis and delays in management.
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