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(A) The sagittal view revealed a central disc extrusion at L3/L4 measuring 12 × 8 × 6 mm (red arrow), causing severe spinal canal stenosis and compression of the descending L4 nerve roots bilaterally within the central canal. Mild disc bulges were noted at the L4/L5 and L5/S1 levels without significant stenosis. (B) A follow-up MRI of the lumbar spine revealed resolution of the L3/L4 disc extrusion.
