MSFinals-3201

A 37-year-old man comes to the Emergency Department complaining of left-sided hearing loss and tinnitus that have been ongoing for three months. He also reports experiencing dizziness, which has now progressed to difficulty walking steadily. Audiometry confirms sensorineural hearing loss in his left ear, and a contrast magnetic resonance imaging scan indicates that he has a tumor with characteristics consistent with an acoustic neuroma. Which type of cell is linked to the excessive growth of an acoustic neuroma?