Lumbago Five lumbar type vertebral bodies are presumed to be present. Vertebral body heights are within normal limits. There is grade 1 retrolisthesis of L5 on S1. Alignment is otherwise maintained. There is disc desiccation involving the L4-L5 and L5-S1 levels with some loss of height. Bone marrow signal is benign. There are fatty marrow signal changes involving the L5 pedicles and facets which are nonspecific. No definite pars defect is evident although can be better assessed with oblique radiographs. The conus medullaris is normal in position.Mild degenerative changes are seen, as described below:L1-L2: No significant disc disease. No spinal canal or neural foraminal stenosis.L2-L3: No significant disc disease. No spinal canal or neural foraminal stenosis.L3-L4: No significant disc disease. No spinal canal or neural foraminal stenosis.L4-L5: Disc desiccation and disc bulge with small central protrusion. No spinal canal or neural foraminal stenosis.L5-S1: There is a disc bulge eccentric to the right with a small right paracentral protrusion component. There is partial effacement of the right lateral recess with contact of the descending S1 nerve root. No significant central canal stenosis. There is mild right and minimal left neural foraminal stenosis. The extra foraminal right L5 nerve root contacts the lateral disc bulge without definite evidence of impingement. Mild bilateral facet arthropathy.Paraspinous soft tissues are within normal limits.
Degenerative changes at the L4-L5 and L5-S1 levels with disc protrusions. At the L5-S1 level, there is contact of the disc with the extraforaminal right L5 nerve root as well as the descending right S1 nerve root in the lateral recess. No significant central spinal canal stenosis at any level. Mild bilateral L5-S1 facet arthropathy. Please see details above.