Status post L5-S1 left microdiscectomy one year ago Examination is mildly motion degraded. Five lumbar type vertebral bodies are presumed to be present. Vertebral body heights are within normal limits. There is grade 1 to 2 anterolisthesis of L4 on L5 similar to prior. There is also trace retrolisthesis of L3 on L4 and L4 on L5. Bone marrow signal is benign. The conus medullaris is normal in position.Multilevel degenerative changes are seen, as described below:L1-L2: Minimal disc bulge. No spinal canal or neural foraminal stenosis.L2-L3: Minimal disc bulge. No spinal canal or neural foraminal stenosis. Mild facet arthropathy.L3-L4: Dorsal annular fissure with minimal central disc extrusion. There is ligamentum flavum thickening and facet arthropathy, relatively worse on the left. There is minimal central canal narrowing. There is mild left neural foraminal stenosis. No significant right neural foraminal narrowing.L4-L5: Grade 1/2 anterolisthesis similar to prior with disc uncovering. There is partial effacement of the lateral recesses with minimal central canal stenosis. Mild bilateral neural foraminal narrowing. Advanced bilateral facet arthropathy.L5-S1: Interval microdiscectomy with previously seen left-sided disc extrusion no longer evident. No evidence of recurrent disc herniation. There is minimal low T1 signal likely related to scar tissue in the left lateral and dorsal epidural space. Advanced facet arthropathy, left worse in right, with minimal left neural foraminal stenosis. No significant central canal narrowing or right neural foraminal stenosis.Small right renal cyst.
1. Compared to 9/9/2014, interval postsurgical changes related to left-sided microdiscectomy at L5-S1. No evidence of recurrent disc herniation.2. Degenerative changes at additional levels including degenerative spondylolisthesis at L4-L5 similar to prior. Advanced facet arthropathy is present at L4-L5 and L5-S1.3. Minimal central canal narrowing at L3-L4 and L4-L5. There is also mild neural foraminal narrowing at multiple levels as above. No high-grade spinal canal or foraminal stenosis at any level.