NF type 1, optic glioma and medullary mass. Brain: There is no significant interval change in the enhancing mass involving the cisternal portion of the left optic nerve, although the tumor has gradually increased in size since 2012, now measuring up to approximately 16 mm. However, there appears to be overall decrease in size of the multiple foci of T2 hyperintensity in the bilateral basal ganglia and cerebellar hemisphere. The non-enhancing expansile lesion in the right posterior medullar has not significantly changed. There is no evidence of acute infarct. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. Orbits: The bilateral globes and ocular adnexa are unremarkable. There is no evidence of abnormal intraorbital enhancement or mass lesions.
1. No significant interval change in the left optic nerve glioma, although the tumor has gradually increased in size since 2012.2. Apparent overall decrease in size of the multiple bilateral basal ganglia and cerebellar hemisphere lesions.3. The non-enhancing expansile lesion in the right posterior medullar has not significantly changed. 