Figure 7.

MRI of the lumbar spine performed 17 days after initial presentation. (a) Sagittal T1-weighted image showing hypointense lesions in L4 and L5 vertebral bodies (arrows) and disk height loss (arrowhead). (b) Sagittal T2-weighted image showing hyperintense lesion in L4 vertebral body and hypointense lesion in L5 vertebral body (arrows). There is loss of signal intensity in L4-L5 disk (arrowhead). (c) Sagittal T1-weighted post-gadolinium image with fat suppression showing L4 and L5 vertebral body enhancement. (d) Axial Tl-weighted post-gadolinium image showing epidural (black arrow) and paravertebral (white arrow) enhancement.