Fig 3.

A 21-year-old man with asymmetric wasting of the bilateral hand muscles. Neutral MR T2-weighted sagittal and coronal (A and B) images show lower cervical cord atrophy with segmental hyperintensities in the cervical cord at the C6 and C7 vertebral levels (white arrow). Axial T2-weighted images (C and D) show asymmetric hyperintensities, more pronounced in the left half of the cervical cord (arrow). Flexion cervical MR STIR image (E) shows an enlarged posterior epidural space, which is seen as an enhancing posterior epidural venous plexus on the postgadolinium T1 fat-suppressed sagittal image (F) (block arrow).