History of acoustic schwannoma. There no significant change in size and enhancement characteristics of the right cerebellopontine angle tumor with extension into the medial internal auditory canal that measures 11 x 15 mm, previously 11 x 16 mm. There is no mass effect upon the brainstem. There is no evidence of intracranial hemorrhage or acute infarct. The brain parenchyma appears unremarkable. There is no abnormal intracranial enhancement. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. There an unchanged probable retention cyst in the left nasopharynx. The skull, paranasal sinuses, and scalp soft tissues are otherwise unremarkable.
No significant change in size and enhancement characteristics of the right vestibular schwannoma.