Fig. 2.

a T1-sagittal image showing acute compression fractures at T11 and L2 and degenerative spondylolisthesis at L4/5. b T2-weighted axial image showing minimal epidural lipomatosis at L5/S1. c MR myelogram showing a complete block at L4/5 and clear CSF flow at L5–S1. d Five months after checking initial MR image, T2-weighted axial image showing extensive epidural fat circumferentially compressing the thecal sac at L5/S1. e MR myelogram showing a complete block at L4–5 and constrictive narrowing at L5–S1. f Postoperative T2-weighted MR image showing well decompressed the thecal sac