Figure 1
Sagittal (A) and axial (B) T2-weighted images with fat suppression highlight an area of myelitis at the C3–C4 level. Notably, hyperintensity is observed in the posterolateral region of the spinal cord. Additionally, axial T2-weighted imaging further reveals characteristic demyelinating lesions (C).
Video 1
(Spinal Segmental Myoclonus in a Patient with Progressive MS): This video captures a 57-year-old female exhibiting involuntary, arrhythmic, jerky movements localized to her upper trunk and proximal left arm, characteristic of spinal segmental myoclonus.