 Advanced degenerative disk disease with sclerotic changes of the vertebral body endplates throughout the lumbar spine. Multilevel retrolisthesis and anterolisthesis, as described below. Lumbar spine level specific findings T12-L1: Advanced degenerative disk disease with vacuum disk phenomena. Dorsal to the T12 vertebral body is a cluster of calcification in the midline with associated soft tissue density. This likely represents an old herniated disk. No narrowing of the neural foramina or central spinal stenosis. L1-2: Advanced degenerative disk disease with vacuum disk phenomena. Grade 1 retrolisthesis of L1 on L2. No narrowing of the neural foramina or central spinal stenosis. L2-3: Advanced degenerative disk disease with vacuum disk phenomena.Grade 1 retrolisthesis of L2 on L3. No narrowing of the neural foramina or central spinal stenosis. L3-4: Mild degenerative disk disease . No narrowing of the neural foramina or central spinal stenosis. L4-5: Advanced degenerative disk disease . No narrowing of the neural foramina or central spinal stenosis. L5-S1: Grade 2 anterolisthesis of L5 on S1 with bilateral defects of the pars interarticularis compatible with spondylolysis. Hypertrophic changes of the posterior elements. No narrowing of the neural foramina or central spinal stenosis.
Spondylolysis at L5-S1 with multilevel retrolisthesis and advanced degenerative disk disease, as described above