Unusual regression of a sudden-onset sensorineural hearing loss in a patient with cerebellopontine angle pathology.

This is a report of a patient with small internal acoustic canal pathology presenting as a sudden-onset sensorineural hearing loss. Initially the patient received non-specific empirical medical therapy and the sudden-onset sensorineural hearing loss recovered rapidly. Regression of the hearing loss, despite no change in magnetic resonance imaging (MRI) findings after the medical treatment is documented and discussed.