Reason: Spinal Stenosis? History: Pain in low back radiating to both thighs. There is unchanged 4 mm of retrolisthesis of L5 relative to both L4 and S1. This subluxation is associated with degenerative disc disease at L4-5 and L5-S1, loss of height and T2 signal. The vertebral body heights are preserved. The vertebral bone marrow signal is unremarkable, including multifocal hemangiomas or focal fat deposits. The lower spinal cord and conus medullaris show normal signal and morphology. There are multiple T2 hyperintense lesions in both kidneys that are probably cysts.
Multilevel degenerative disease is most pronounced at L4-5, where it results in severe spinal narrowing. I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.