Male, 70 years old, with pain in the right leg. Findings are seen compatible with posterior instrumented fusion from L2 through L5. The L4 and L5 vertebral bodies demonstrate osseous fusion across the disc space while the other vertebral body levels remain distinct.The normal lumbar lordosis is straightened. A grade 1 retrolisthesis of L5 relative to S1 is seen. Sagittal alignment is unremarkable. Vertebral body height and morphology are within normal limits. Where metallic artifact does not obscure, the bone marrow signal is unremarkable.Laminectomy has been performed from approximately L2 through L4 with expansion of the spinal canal through this region. No significant spinal canal stenosis is demonstrated at any level. Mild disc bulging is seen at L1-2. At L5-S1, disc uncovering and disc bulging is seen.The neural foramina are not perfectly visualized due to metallic artifact. However, it does appear that the foramina from L1-2 through L4-5 are reasonably patent. At L5-S1, there appears to be severe foraminal narrowing on the right and moderate to severe narrowing on the left .Incidental note is made of multiple renal cysts.
1.Findings compatible with posterior instrumented fusion from L2 through L5. The vertebral bodies of L4 and L5 demonstrate osseous fusion across the disc space.2.The spinal canal remains patent throughout with no areas of high-grade spinal canal stenosis.3.Severe foraminal narrowing is evident on the right at L5-S1 with moderate to severe narrowing on the left.