Bilateral tinnitus, followed by concussion in September. 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. There is a partially imaged left superficial parotid mass that measures up to approximately 20 mm.
1. No evidence of retrocochlear or inner ear lesions.2. A partially imaged left superficial parotid mass that measures up to approximately 20 mm may represent lymphadenopathy or a salivary neoplasm, for example. Dedicated parotid imaging may be useful for further evaluation.