 There last well formed disk space is referred to as L5-S1. There is 2-mm anterolisthesis of L5 on S1. The osseous marrow signal is benign with scattered small foci of high T1 signal intensity representing hemangiomas versus focal fat deposition. The conus terminates at superior L1.T12-L1: No disk herniation or spinal stenosis.L1-2: Mild loss of disk height with desiccation, diffuse disk bulge, ligamenta flava thickening, and facet arthropathy causing no spinal stenosis.L2-3: Mild loss of disk height with desiccation, diffuse disk bulge asymmetric to the right, ligamenta flava thickening, prominent posterior epidural fat, and facet arthropathy causing encroachment upon the bilateral subarticular zones and mild spinal canal stenosis. Mild bilateral neural foraminal stenosis.L3-4: Moderate loss of disk height with desiccation, diffuse disk bulge with right foraminal/far lateral protrusion, ligamenta flava thickening, prominent posterior epidural fat and facet arthropathy causing severe spinal canal stenosis. Severe right neural foraminal stenosis.L4-5: Moderate to severe loss of disk height with desiccation, diffuse disk bulge asymmetric to the right, moderate bilateral facet arthropathy and ligament flava thickening with prominent posterior epidural fat causing mild spinal canal stenosis, and severe bilateral neural foraminal stenosis.L5-S1: 2-mm anterolisthesis of L5 and S1. Mild loss of disk height with desiccation, uncovering of the disk, advanced facet arthropathy with right-sided joint effusion with a lateral right 7-mm synovial cyst projecting toward the spinal canal. Moderate spinal canal stenosis and severe bilateral neural foraminal stenosis.
Multilevel lumbar spondylosis worst at L3-4 where there is severe spinal canal stenosis. Severe neural foraminal stenoses at L3-4, L4-5 and L5-S1.