I had a minimally invasive surgery on L5 in January 2001. I had an mri this week because I have experienced some pain in lower back and pain down right side of my leg down to my knee lately. The "impression" on my mri report states: Significant right lateral compromise and exit foramen narrowing at L5-S1 secondary to most likely protrusion and possible extrusion of disc into that location. There are associated degenerative disc disease changes on the axial images. Correlation with interventional procedures is recommended. There is a small metal artifact. I also question partial laminectomy defect at L5. Remaining levels are unremarkable. What does this mean?