FIG 3. Case 7: Cervical spine MR study obtained after onset of neck pain and dysesthesia and paresthesia in upper distal extremities, 3 days after vertebral disruption and chemotherapy.

A, Sagittal T2-weighted image displays extensive abnormal diffuse hyperintense signal extending from the medulla down to the C7 level. Also note mild cervical spinal cord enlargement.

B, Axial fast spin-echo T2-weighted image at C4–C5 depicts abnormal diffuse hyperintense signal involving the cord, sparing only the peripheral white matter.

C, Sagittal contrast-enhanced T1-weighted image shows an area of abnormal faint and diffuse enhancement at the level of C5, over a 2-cm longitudinal segment (arrow). Also note the increase in cord diameter with obliteration of the subarachnoid spaces at that level.

D, T2-weighted sagittal image obtained 1 month after the initial study shows hyperintense signal now limited to the C4 and C5 vertebral segments. Also note the decrease in cord enlargement, as evidenced by the clear delineation of the anterior and posterior subarachnoid spaces.