Sagittal T2 weighted MRI images demonstrate loss of height and signal at L5 -- S1 disc.
Low signal is also present posterior to the L5 -- S1 disc which is larger in the off-midline images.
Sagittal and axial T1 and axial T2 (bottom right) weighted images show a mass in the
anterolateral spinal canal that displaces the thecal sac laterally and impinges upon
the right S1 nerve root. Note that the L-5 nerve root has already exited through the
neural foramen (top right).
Key words: mri lumbar degenerative