Evaluate for stenosis. Low back pain. Five lumbar type vertebral bodies are presumed to be present. Vertebral body heights are within normal limits. There is grade 1 retrolisthesis at L5-S1, unchanged from prior. Alignment is otherwise within normal limits. Bone marrow signal is benign. There is mild disc desiccation at L4-5 and L5-S1, unchanged. The conus medullaris is normal in position terminating at L1-2. There is fibrofatty infiltration of the filum, which measures less than 2 mm, unchanged from prior study and of doubtful clinical significance. There is congenital narrowing of the spinal canal particularly inferiorly. Multilevel degenerative changes are seen, as described below:L1-L2: There is no spinal canal or neural foraminal stenosis.L2-L3: There is minimal disc bulge. There is no spinal canal or neural foraminal stenosis.L3-L4: There is a mild broad-based disc bulge, with mild narrowing of the spinal canal. There is no neural foraminal stenosis.L4-L5: There is mild disc bulge, epidural lipomatosis, facet arthropathy and congenital narrowing resulting in moderate narrowing of the thecal sac. There is mild bilateral neuroforaminal stenosis, left greater than right.L5-S1: There is prominent epidural fat. There is mild spinal canal stenosis with associated disc bulge. There is mild bilateral neuroforaminal stenosis.Paraspinous soft tissues are within normal limits.
1.No significant change in degenerative changes compared to 12/17/2014 with moderate spinal canal stenosis at L4-L5 and to a slightly lesser degree at L5-S1 related to combination of mild disc bulge, epidural lipomatosis, and congenital narrowing of the spinal canal. 2.Unchanged disc desiccation at L4-5 and L5-S1 and mild facet arthropathy.3.Grade 1 retrolisthesis at L5-S1, unchanged from prior.4.Fatty filum terminale incidentally noted measuring less than 2 mm and of doubtful clinical significance. Conus is in normal position without finding to suggest tethered cord.