 There is straightening of the normal lumbar lordosis. The vertebral body heights are well-maintained. There is loss of disc space at L5-S1, slightly progressed from the prior study. No worrisome focal marrow signal abnormality is appreciated. The distal spinal cord and conus are within normal limits with the conus terminating at the L1 level.T12-L1: No significant disc bulge, herniation, spinal canal or foraminal stenosis. L1-L2: No significant disc bulge, herniation, spinal canal or foraminal stenosis. L2-L3: No significant disc bulge, herniation, spinal canal or foraminal stenosis. L3-L4: No significant disc bulge, herniation, spinal canal or foraminal stenosis. L4-L5: Mild disc bulge. No significant herniation, spinal canal or foraminal stenosis. L5-S1: Slight interval progression of large central/left paracentral disc extrusion with increased left posterior extension and indenting the left thecal sac, resulting in an eccentric mild spinal canal stenosis with impingement of the descending left greater than right S1 and S2 nerve roots. The 11 mm extent of caudal migration is approximately the same. No significant foraminal stenosis.
Slight interval progression of large central/left paracentral disc extrusion at L5-S1, contributing to eccentric mild spinal canal stenosis with impingement of the left greater than right descending S1 and S2 nerve roots. No significant foraminal stenosis.