History of Chiari malformation, thoracic syrinx, and tethered cord. Follow-up exam. Again seen are postoperative changes in the lumbar spine with discontinuous fatty filum compatible with prior fatty filar transection and tethered cord release. There is no new cord signal abnormality or syrinx in the visualized lower thoracic cord. The lumbar spine is in normal alignment with a normal lumbar lordosis. The vertebral body and disk heights are well-maintained. No focal marrow signal abnormality is appreciated. The conus medullaris terminates at the lower L1 level. There is 1 to 2 mm of ventral motion of the conus on prone images although this is not well evaluated due to motion.At L3-4 there is mild disc bulge and minimal right greater than left neural foraminal stenosis. At L4-5 there is mild disc bulge with mild bilateral neural foraminal stenosis. There is no significant spinal canal or foraminal narrowing at any other level within the lumbar spine.
1.Postsurgical findings from tethered cord release and fatty filum/lipoma are unchanged. No new cord signal abnormality or syrinx in the visualized lower thoracic cord. There appears to be 1-2 mm ventral motion of the conus on the prone images. 2.Minimal spondylosis at L3-4 and L4-5 with mild neural foraminal stenosis at these levels.