Figure 1 :a-f Magnetic resonance imaging of proband: (a) T1w sagittal; (b) T2w sagittal showing normal cervical curvature and normal cord; (c) T1w sagittal post contrast in neutral position demonstrates no abnormal enhancement; (d) T1w sagittal post contrast in flexion position demonstrates enhancing epidural space from C3-C7 level; (e) T2w axial; and (f) T1w axial post contrast do not show any cord atrophy