case_images: PMC9373146_01
case_images: MRI brain spine (sagittal view T2) showing (a) brainstem and (b) cervical cord
  hyperintense signals.
case_images: 10.1177_25151355221115016-fig1.jpg
case_images: PMC9373146_01_10.1177_25151355221115016-fig1.jpg
case_images: fig1-25151355221115016
case_images: Repeat MRI surprisingly showed diffuse non-enhancing hyperintensity in entire spinal cord and brain stem without any signal in optic nerves (Figure 1).