Sensorineural hearing loss. Internal Auditory Canals: The bilateral cranial nerve 7 and 8 complexes are intact. There is no evidence of mass lesions. There appears to be thinning and possible dehiscence of the left superior semicircular canal. The inner ear structures, including the cochlea, vestibule, endolymphatic duct and sac, and semicircular canals otherwise appear unremarkable. There appears to be a small amount of retained secretions within the left mastoid air cells and pneumatized petrous apex.Brain: There is no evidence of intracranial hemorrhage, mass, or acute infarct. There are scattered foci of nonspecific T2 hyperintensity in the cerebral white matter. There is no abnormal intracranial enhancement. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
1. Apparent thinning and possible dehiscence of the left superior semicircular canal. A temporal bone CT may be useful for further evaluation. No evidence of retrocochlear or inner ear lesions.2. Scattered foci of nonspecific T2 hyperintensity in the cerebral white matter may represent chronic small vessel ischemic disease. No evidence of intracranial hemorrhage, mass, or acute infarct. 