 There is grade 1 anterolisthesis of L4 on L5. The vertebral column alignment is otherwise within normal limits. The vertebral body heights are preserved. There is multilevel disc desiccation and mild loss of intervertebral disc height throughout the lumbar spine. The bone marrow appears unremarkable. The distal spinal cord and conus medullaris display normal signal. However, there is redundancy of the cauda equina nerve roots above the level of stenosis at L1. The paravertebral soft tissues are unremarkable. At T10-11, there is a relatively large right paracentral/foraminal disc protrusion, bilateral ligamentum flavum hypertrophy/facet arthropathy, with effacement of the right ventral aspect of the thecal sac and mild mass effect on the distal spinal cord with mild overall spinal canal stenosis, and severe right neural foraminal stenosis. At T11-T12 and T12-L1, there is mild bilateral facet mild bilateral facet arthropathy and ligamentum flavum hypertrophy, but no significant spinal canal or neural foraminal narrowing. At L1-L2, there is a disc bulge with left paracentral disc extrusion, bilateral facet arthropathy and ligamentum flavum hypertrophy, with severe spinal canal stenosis, and mild to moderate bilateral neural foraminal stenosis. At L2-L3, there is a disc bulge, bilateral facet arthropathy and ligamentum flavum hypertrophy, with severe spinal canal stenosis and mild to moderate bilateral neural foraminal narrowing. At L3-L4, there is a disc bulge, bilateral facet arthropathy and ligamentum flavum hypertrophy, with severe spinal canal stenosis and mild left and severe right neural foraminal narrowing. At L4-L5, there is a disc bulge with a right foraminal and lateral disc protrusion, bilateral facet arthropathy and ligamentum flavum hypertrophy, with severe spinal canal stenosis, severe right neural foraminal narrowing, and mild to moderate left neural foraminal narrowing. At L5-S1, there is a disc bulge eccentric to the left, facet arthropathy/ligamentum flavum hypertrophy, but no significant spinal canal stenosis. There is moderate left and mild right neural foraminal stenosis at this level, however.
Multilevel degenerative spondylosis in the lumbar spine, including severe spinal canal narrowing at L1 though L5, as well as moderate to severe right neural foraminal narrowing at L3-4 and L4-5.