Bilateral sensorineural hearing loss, but in August presented with a middle ear effusion and flat tympanogram. 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. There is diffuse fluid within the left mastoid air cells and middle ear. The right mastoid air cells and middle ear appear unremarkable. There are prominent bilateral posterior temporal calvarium arachnoid granulations. There is a chronic right basal ganglia lacunar infarct. There are degenerative changes involving the right temporomandibular joint.
1. Left otomastoid effusions, but no evidence of retrocochlear or inner ear lesions.2. Chronic right basal ganglia lacunar infarct.