Male, 77 years old, with refractory left sciatica. A trace retrolisthesis of L5 relative to L4 and S1 is seen. Spinal alignment is otherwise unremarkable. Vertebral body height and morphology are within normal limits. No concerning marrow signal abnormality is observed.The visualized spinal cord, conus and nerve roots of the cauda equina are intact.Loss of disc T2 signal is seen at L4-5 and L5-S1. The discs demonstrate relative preservation of height. Additional level specific findings are as follows:L1-2: Unremarkable. L2-3: Minimal laterally bulging disc. No significant spinal canal or foraminal stenosis. L3-4: Mild facet hypertrophy and ligamentum flavum thickening. Minimal laterally bulging disc. No significant spinal canal stenosis. Mild bilateral foraminal narrowing. L4-5: Moderate facet hypertrophy and ligamentum flavum thickening. Mild bulging disc asymmetric to the right foraminal zone. Mild spinal canal stenosis. Moderate bilateral foraminal narrowing. L5-S1: Mild facet hypertrophy and ligamentum flavum thickening. Mild bulging disc. No significant spinal canal stenosis. Moderate to severe bilateral foraminal narrowing.
Relatively mild degenerative findings are seen which result in a mild spinal canal stenosis at L4-5, mild bilateral foraminal narrowing at L4-5, and moderate to severe bilateral foraminal narrowing at L5-S1.