 There is abnormal T2 hyperintensity involving the left prechiasmatic optic nerve extending from just anterior to the chiasm and into the intracanalicular segment. The optic nerve more anteriorly is within normal limits. Previously seen enhancement of the optic nerve in these segments on outside MRI from 6/2/2015 has essentially resolved without definite residual enhancement on the current study. Bilateral orbits are otherwise unremarkable. Brain parenchyma demonstrates no T2/FLAIR hyperintense lesions in the white matter to suggest demyelinating disease. No abnormal parenchymal or meningeal enhancement. Ventricles and sulci appear within normal limits. Major flow-voids are preserved. Calvarium and extracranial soft tissue structures are grossly unremarkable.
1. Compared to MRI orbit study from 6/2/2015, there has been interval resolution of enhancement involving the left optic nerve with persistent abnormal T2 signal involving the left prechiasmatic and intracanalicular segments. Findings are compatible with treated/resolving optic neuritis.2. Brain parenchyma is unremarkable without evidence of white matter lesions.