 Compared to 10/1/2015, there is no significant change in enhancing lesion along the left optic tract measuring 9 x 7 x 7 mm. Enhancing nodule at the level of the left thalamus measuring 14 x 16 x 13 mm is also not appreciably changed in size. Mild enhancement involving the left globus pallidus lesion is similar to prior but clearly improved since 6/11/2015. Expansile T2/FLAIR signal abnormality with minimal enhancement of the optic chiasm is similar to prior. FLAIR hyperintensity involving the right optic tract is also similar. There is also no significant change in appearance of the intraorbital component of the optic nerve gliomas, right larger than left, again noted to have mild enhancement of the right intraorbital optic nerve and persistent dilatation of the right optic nerve sheath. T1 shortening involving the basal ganglia and dentate nuclei are compatible with posttreatment change. Linear focus of FLAIR hyperintensity along the left frontal lobe presumably related to prior biopsy. Unchanged minimal chronic blood products in the left basal ganglia region. No new intracranial mass or mass effect. No evidence of acute infarct or hemorrhage. No hydrocephalus.
Compared to 10/1/2015, there is no appreciable change in size or appearance of multiple bilateral optic pathway gliomas.