Left tinnitus, constant, for the past 8 months. Left asymmetric sensorineural hearing loss. The bilateral cranial nerve 7 and 8 complexes are intact. There is no evidence of mass lesions. The inner ear structures, including the cochlea, vestibule, endolymphatic duct, and semicircular canals, appear unremarkable. The bilateral mastoid air cells and middle ears also appear unremarkable. Small hippocampal sulcus remnant cysts are more pronounced on the right. There is bilateral parotid sialosis and temporomandibular osteoarthrosis. There is an incidental right occipital developmental venous anomaly.
No evidence of retrocochlear or inner ear lesions.