Figure 1a and 1b: Coronal view of T1-weighted MRI of the brain with contrast demonstrates subtle asymmetric volume loss in the intraorbital portion of the left optic nerve, as well as subtle abnormal enhancement within the intraorbital portion of the right optic nerve [1a]. There is also subtle abnormal leptomeningeal enhancement in the left hypothalamic region, as well as along the surface of the cervicomedullary junction [1b].