Prolonged back pain For the purposes of numbering there are 4 nonrib-bearing lumbar type vertebral bodies and a transitional segment labeled S1 for the purposes of the study. Vertebral body heights are within normal limits. Alignment is within normal limits aside from minimal L4-S1 retrolisthesis. Bone marrow signal is benign. The conus medullaris is normal in position.There is developmental narrowing of the lumbar spinal canal with prominence of the dorsal epidural fat and superimposed mild degenerative changes as described below:L1-L2: No significant disc disease. Developmental narrowing of the spinal canal. Otherwise no significant spinal canal or neural foraminal stenosis.L2-L3: No significant disc disease. Developmental narrowing of the spinal canal. Otherwise no significant spinal canal or neural foraminal stenosis.L3-L4: Disc desiccation and mild bulge. Small Schmorl's nodes involving the L3 and L4 endplates. Developmental narrowing of the spinal canal. Otherwise no significant spinal canal or neural foraminal stenosis.L4-S1: Disc desiccation and mild bulge. Developmental narrowing of the spinal canal. Otherwise no significant spinal canal stenosis. Mild bilateral neural foraminal stenosis. There is mild bilateral facet arthropathy.Paraspinous soft tissues are within normal limits.
1. Please note variant anatomy with 4 lumbar vertebrae and transitional segment labeled S1. 2. Developmental narrowing of the lumbar spinal canal with superimposed mild degenerative changes in the lower lumbar spine including mild disc bulges at the L3-L4 and L4-S1 levels. There is also mild bilateral L4-S1 neural foraminal stenosis. No high-grade spinal canal stenosis at any level.