COMPARISON: MR Brain dated [**Date**] FINDINGS: On the right side, the external auditory canal is patent. The tympanic membrane is not identified as the middle ear cavity is completely opacified, however it appears retracted inward. The ossicles appear intact, and no definite erosion is seen. The inner ear structures, including the semicircular canals, vestibule, and cochlea are unremarkable. The vestibular aqueduct is not enlarged.