 The last well formed disk space is referred to as L5-S1, consistent with prior exam. There is new minimal 2-mm anterolisthesis of L4 on L5, and stable 2-mm retrolisthesis of L5 on S1. The vertebral body heights are preserved. There are scattered foci of high T1 signal intensity in the vertebral bodies likely representing foci of fatty deposition versus hemangiomas. There is disk desiccation at multiple levels and lumbar spine resulting in moderate loss of disk height at L4-5, and severe loss of disk height at L5-S1 with type II degenerative endplate changes at L5-S1 again seen. The conus terminates at T12-L1.T12-L1: No disk herniation or spinal stenosis.L1-2: No disk herniation or spinal stenosis.L2-3: No disk herniation or spinal stenosis. Mild bilateral facet arthropathy and minimal left far lateral disk bulge.L3-4: Mild disk bulge and left far lateral annular tear, facet arthropathy and ligamenta flava thickening with prominent posterior epidural fat without significant spinal canal or neural foraminal stenosis.L4-5: New 2-mm anterolisthesis of L4 on L5 with uncovering of the disk, worsening loss of disk height with new vacuum disk. Severe worsened bilateral facet arthropathy with facet effusions. Ligamenta flava thickening. Mild spinal canal stenosis with moderate bilateral subarticular zone stenosis. Moderate left and mild right neural foraminal stenosis.L5-S1: Mild disk bulge and facet arthropathy without significant spinal stenosis.
1.New 2-mm degenerative anterolisthesis of L4 on L5 secondary to worsening facet arthropathy with facet joint effusions. Mildly worsened disk height loss with new vacuum disk at L4-5. No significant change in mild spinal canal stenosis with moderate bilateral subarticular zone stenosis, and moderate marked left and mild right neural foraminal stenosis at L4-5.2.Degenerative changes elsewhere are stable.