had ct scsan what does this mean? Technique: Contiguous axial sections were obtained through the lumbar spine . Multiplanar reformatted images were obtained. Findings: Mild to moderate loss of disc height is seen the L5-S1 level. Mild loss of disc height is seen at the L4-5 level. Scattered Schmorl node formation is noted. Vertebral body heights are maintained. Grade 1 retrolisthesis of L5 on S1 of 3.3 mm is identified. The T12-L1 level demonstrates no significant bony central stenosis or bony foraminal encroachment. The L1-2 level demonstrates a shallow broad-based disc protrusion with flattening the thecal sac anteriorly. No significant bony central stenosis or bony foraminal encroachment seen. The L2-3 level demonstrates a shallow disc osteophyte complex and superimposed shallow broad-based disc protrusion with mild central stenosis. Mild facet arthropathy and ligamentum flavum hypertrophy are identified. Foraminal encroachment is of mild to moderate degree on the left and mild on the right. The L3-4 level demonstrates a shallow disc osteophyte complex with flattening of the thecal sac anteriorly. Mild to moderate facet arthropathy and ligamentum flavum hypertrophy are seen. Mild central stenosis is present. Mild bilateral foraminal encroachment is noted. The L4-5 level demonstrates disc protrusion lateralizing to the left pre-foraminal location with moderate central stenosis. Foraminal encroachment is of mild degree bilaterally. Hemilaminectomy is noted on the left. The L5-S1 level demonstrates a disc osteophyte complex which appears to abut the S1 nerve root sheaths. Mild bilateral foraminal encroachment is noted. Impression: 1. Hemilaminectomy is identified on the left at the L4-5 level. A disc protrusion lateralizes to the left pre-foraminal location. If needed a contrast study with MR can be obtained to determine whether this is granulation tissue versus a disc protrusion