Radicular low back pain, lumbosacral spondylosis without myelopathy. Five lumbar type vertebral bodies are presumed to be present. Vertebral body heights are within normal limits. Alignment is within normal limits. Bone marrow signal is benign. There is mild disc desiccation at L2-L3 and L3-L4 levels and moderate desiccation at L5-S1 level. The conus medullaris is normal in position. There is prominent epidural fat at various levels resulting in moderate developmental narrowing of the distal spinal canal. There is mild grade I retrolisthesis of L5 on S1, approximately 3 mm. Minimal retrolisthesis as well as prominent epidural fat was demonstrated on previous CT dated 9/19/2014.Mild to moderate multilevel degenerative changes are seen, as described below:T11-T12: On sagittal imaging there is prominent ligamentum flavum thickening with moderate central spinal canal stenosis.L1-L2: No significant disc disease. No spinal canal or neural foraminal stenosis.L2-L3: There is mild ligamentum flavum hypertrophy. There is facet arthropathy with joint effusion on the right. No spinal canal or neural foraminal stenosis.L3-L4: There is annular disc bulge with left-sided prominence causing mild left foraminal narrowing. There is mild to moderate spinal canal stenosis.L4-L5: There is diffuse disc bulge causing mild to moderate bilateral neural foraminal narrowing. There is mild hypertrophy of ligamentum flavum and bilateral facet hypertrophy and bilateral joint effusion. There is mild to moderate spinal canal stenosis.L5-S1: There is uncovering of the disc with superimposed mild disc bulge, left more than right, causing causing moderate to severe bilateral neural foraminal narrowing. There is ligamentum flavum hypertrophy and mild to moderate bilateral facet arthropathy. There is mild to moderate spinal canal stenosis. Paraspinous soft tissues are within normal limits.
1. Moderate degenerative disc disease predominantly involving L5-S1 causing moderate to severe bilateral neural foraminal stenosis.2. There is mild to moderate spinal canal stenosis at various levels predominantly due to prominent epidural fat.3. Unchanged minimal grade I retrolisthesis of L5 on S1.