 There is minimal anterolisthesis of L4 on L5 and mild retrolisthesis of L5 on S1. The vertebral body heights are well-maintained. There is mild loss of disc height at L3-L4 and moderate loss of disc height at L4-L5 and L5-S1. There are Schmorl's nodes at the inferior endplate of L3 and L4. There are endplate degenerative changes at L5-S1. 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, spinal canal or foraminal stenosis.L1-L2: Mild bilateral facet degeneration. No significant disc bulge, herniation, spinal canal or foraminal stenosis. L2-L3: Mild disc bulge, mild bilateral facet degeneration and thickening of the ligamentum flavum. No significant spinal canal or foraminal stenosis.L3-L4: Slightly progressed disc bulge, moderate bilateral facet degeneration and thickening of the ligamentum flavum, contributing to minimal bilateral foraminal stenosis. No significant spinal canal stenosis. L4-L5: Disc bulge, advanced bilateral facet degeneration and thickening of the ligamentum flavum, contributing to mild left relatively worse in right foraminal stenosis. No significant spinal canal stenosis. L5-S1: Generalized disc bulge with interval decrease in size of previously seen central disc herniation. Loss of disc height is progressed since 12/15/2011. Advanced bilateral facet arthropathy. There is effacement of the lateral recesses and mild central canal stenosis. There is mild bilateral foraminal stenosis, left worse in right.
1. No high-grade neural foraminal stenosis or central canal stenosis is seen at any level. 2. Compared to 12/15/2011, there is interval decrease in size of previously seen herniated disk at L5-S1. There is mild bilateral L5-S1 neural foraminal stenosis, left relatively worse than right, as well as effacement of the lateral recesses with contact of the descending S1 nerve roots. 3. Moderate degenerative disc disease at L4-L5 and mild degenerative disc disease at L3-L4 levels also present as described above. I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.