Clinical question: Left unilateral hearing loss. Signs and symptoms: Hearing loss, incontinence, tinnitus. Pre and post enhanced MRI of IACs:Examination demonstrates normal signal intensity and morphology of pons, bilateral cerebellopontine angle cisterns, bilateral neurovascular bundles, bilateral internal auditory canals, bilateral mastoid air cells and middle ear cavities and grossly unremarkable signal intensity and morphology of the inner ear structures. There is no detectable abnormality at the level of the skull base. There is no detectable abnormal enhancement of the pons, bilateral neurovascular bundles, internal auditory canals or within the petrous bones. No detectable abnormal enhancement of skull base. There is no detectable abnormality of cranial nerves and no detectable abnormal enhancement.
Negative pre and post enhanced MRI of the IACs.