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Results from a special battery of auditory tests are used to document, for the first time, recovery from a total unilateral hearing loss occurring as part of a latero-medial inferior pontine syndrome. Although sensitivity for pure tones and speech was regained within two months of onset, definite retrocochlear signs persisted for nine months. The tests which best demonstrated the lingering retrocochlear abnormality were binaural masking level difference procedures for 500 Hz pure tones and speech and examination of the amplitude of the acoustic reflex over a ten second time period. The relative sensitivity of other speech and pure tone tasks in detecting the retrocochlear problem is detailed.