 Redemonstrated is a homogeneously enhancing mass filling the right internal auditory canal with extension into the cerebellopontine angle cistern. This lesion appears unchanged in size compared to both the MRIs dated 10/23/13 and 5/14/14, now measuring approximately 8 mm by 15 mm (series 8, image 74). The schwannoma extends approximately 4 mm into the cerebellopontine angle (series 8 image 74). There may be some mild bone remodeling at the meatus of the internal auditory canal secondary to schwannoma. There is no mass effect upon the brainstem. The cerebellar tonsils are in normal position. The ventricles and sulci are normal in size. The pituitary gland is normal in size. There is no evidence for intracranial hemorrhage or acute infarction. No diffusion-weighted abnormalities are identified. There are no extraaxial fluid collections or subdural hematomas. Flow voids are present within the major vessels indicating patency. The paranasal sinuses and mastoid air cells are clear. There is no abnormal enhancement within the brain.
Redemonstration of a right IAC schwannoma which appears unchanged in size compared to prior studies dating back to 10/23/13. No new lesion is identified.