A Case of Cochlear Implantation in a Patient With Intracochlear Schwannoma

Intralabyrinthine schwannomas are rare benign tumors, which arise from neural portions within the labyrinth. These subclassified into seven groups according to affected inner ear structures. Intracochlear (ICS) tumors confined cochlea, and these can cause progressive unilateral sensorineural hearing loss, tinnitus, vertigo aural fullness. Here, we report a 49-year-old female patient with left sudden loss. There was no improvement of despite steroid hyperbaric oxygen therapy. Space occupying lesion in basal turn cochlea identified MRI enhancement. She underwent tumor removal through an extended round window approach, cochlear implantation performed successfully. This is first case after ICS Korea, discuss management options review literature.