Herniated lumbar disc, is disc still there? 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. The conus medullaris is normal in position.Multilevel degenerative changes are seen, as described below:L1-L2: No significant disc disease. No spinal canal or neural foraminal stenosis.L2-L3: No significant disc disease. No spinal canal or neural foraminal stenosis.L3-L4: No significant disc disease. No spinal canal or neural foraminal stenosis.L4-L5: Previously seen left paracentral disc protrusion has essentially resolved. There is moderate facet arthropathy at this level with an approximately 9 x 11 mm T2 hyperintense structure adjacent to the left facet joint which is favored to represent a synovial cyst. There appears to be associated mass effect on the left descending L5 nerve root in the lateral recess. There is mild left neural foraminal narrowing. No significant central canal or right neural foraminal narrowing. L5-S1: Central disc protrusion is again seen. No significant spinal canal stenosis. There is minimal narrowing of the neural foramina bilaterally.Paraspinous soft tissues are within normal limits.
1. Compared to 7/7/2015, there has been significant interval decrease in size of the previously seen left paracentral disc protrusion at the L4-L5 level.2. Approximately 1 cm T2 hyperintense structure at the L4-L5 level is favored to represent a synovial cyst (less likely disc material) and is associated with mass effect on the descending left L5 nerve root in the lateral recess.3. No significant central canal stenosis at any level. Minimal neural foraminal narrowing as described above.