Figure 1: (a) Spinal Sagittal T2-WI with longitudinally extensive spinal cord expansion and hyperintensity extending from lower medulla to conus (white arrows); (b) Post contrast Sagittal T1 shows patchy cord enhancement (solid white arrow); (c) Brain Axial FLAIR at lower pons level showing hyperintensity in central and dorsal pons (white arrowhead); (d) SWI does not show any foci of susceptibility signal changes; (e) Brain sagittal T2-WI shows hyperintensity in central and dorsal pons, and medulla (black arrowhead); (f) no contrast enhancement in brainstem following GAD administration