Diagnosis: Sensorineural hearing loss, asymmetricalClinical question: Asymmetrical SNHL, L>RSigns and Symptoms: hearing loss IACNo abnormal foci of enhancement are appreciated within the internal auditory canals. The cochlea and semicircular canals appear intact. The cochlear nerve can be followed bilaterally tracking into the cochlea. The modiolus is well formed bilaterally.There are subdural effusions in the posterior fossa present which are probably related to atrophy.No abnormal enhancing lesions are appreciated at the cerebellopontine angle cisterns nor the internal auditory canals.There are some opacities present in the left mastoid air cells.
1.There is mild cerebellar atrophy present. 2.There is no evidence for internal auditory canal or inner ear mass to account for the patient's hearing loss.3.Please note that this exam was specific for evaluation of posterior fossa, internal auditory canals and inner ear structures.