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Normal vertebral alignment. No osseous lesion.
Small L3/L4 right paracentral disc protrusion filling the lateral recess and impinging on the descending right L4 nerve root.
Massive L4/L5 disc extrusion with caudal descent of the disc. The disc completely effaces the CSF around the roots of the cauda equina in the thecal sac.
L1 conus.