Right lower extremity radiculopathy, S1 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 with focal T1 hyperintensity involving the L3 vertebral body compatible with a hemangioma or focal fat. 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: Minimal disc bulge eccentric to the left.. No spinal canal or neural foraminal stenosis.L4-L5: Disc desiccation and minimal bulge. No spinal canal or neural foraminal stenosis.L5-S1: There is a right paracentral disc extrusion which effaces the lateral recess. Annular fissure is also evident. There is caudal migration of the extruded disc fragment which remains contiguous with the parent disc fragment, without findings to suggest sequestration. There is mass effect on the right S1 nerve root. Left lateral recess and central canal remain patent. Neural foramina also remain patent. Paraspinous soft tissues are within normal limits.
Disc extrusion at L5-S1 with effacement of the right lateral recess and suspected impingement of the right S1 nerve root.