Weakness [R53.1], Reason for Study: ^Reason: eval for pathology, h/o L4-5, L5-S1 laminectomy and fusion History: c/o LE weakness and urinary incontinence For the purpose of this dictation, the lowest visualized intervertebral disc space is labeled L5-S1. Postoperative status, external fixation with the screws from L3 to L5.There is a grade 1 spondylolisthesis of L4 on L5 and mild retrolisthesis of L5 on S1 with disc degeneration of L4-5 and L5-S1, which appears to be stable.The vertebral body height is maintained. The signal of the visualized cord is normal. The conus medullaris terminates at the L1-2 level. Degenerative changes are specified by the intervertebral level as follows: L1-L2: Minimal disc bulging, no neuroforaminal narrowing or spinal stenosis. L2-L3: no neuroforaminal narrowing or spinal stenosis. L3-L4: Minimal disc bulging, no neuroforaminal narrowing or spinal stenosis. L4-L5: Pseudo-bulging of disc due to spondylolisthesis of L4 on L5, with minimal spinal canal narrowing. Disc dessication is seen. No evidence of neural foraminal narrowing.L5-S1: Diffuse bulging of disc, Disc dessication is seen. No neuroforaminal narrowing or spinal stenosis.
1. Postoperative status from L3 to L5 with the stable spondylolisthesis of L4 on L5 and minimal retrolisthesis of L5 on S1 since prior scan.2. Degenerative changes of intervertebral disc spaces are also stable since prior scan. 3. Visualized spinal cord signal intensity is normal.