Treatment planning MRI for SRS for acoustic neuroma. There is an ovoid enhancing lesion in the left internal auditory canal, which measures up to 10 mm in length and 5 mm in width. There is mild scattered cerebral white matter T2 hyperintensity bilaterally, mainly in a periventricular distribution. There is no abnormal intracranial enhancement. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, and paranasal sinuses are grossly unremarkable. There is a 10 mm thick posterior apical scalp lipoma.
1. A left internal auditory canal vestibular schwannoma measures up to 10 mm.2. Mild scattered cerebral white matter T2 hyperintensity bilaterally may represent a demyelinating disease, perhaps related to Familial Mediterranean fever, but are nonspecific.