Coexistent intralabyrinthine and intracanalicular schwannoma - Case report

Acoustic schwannoma is an unusual benign tumor, which occurs in the internal auditory canal and/or cerebellopontine angle more commonly than being limited to the labyrinth. It is relatively rare to find such an isolated tumor in both the labyrinth and the internal auditory canal. A 55 year-old woman came to our clinic with the chief complaints of tinnitus and hearing impairment in her right ear for one year. No history of head injury or mumps was reported. An audiogram showed a total hearing loss in the right ear and magnetic resonance images revealed two tumor masses located separately in the right labyrinth and the right internal auditory canal. A transmastoid labyrinthectomy and a translabyrinthine approach surgery, were performed to remove the soft, pink lobulated tumors. The pathological report indicated these two masses were schwannomas. The patient was discharged uneventfully and has been free of symptoms to date.