 There is a rotatory subluxation at L1-L2 with 10 mm of rightward subluxation of the L1 vertebral body with respect to the L2 vertebral body. There is also loss of the normal lumbar lordosis. There are multilevel prominent anterior disc-osteophyte complexes. At the T11 level, there is an extradural rounded 9 mm diameter structure with low T2 and low T1 signal adjacent to the left facet joint with an effusion, which causes minimal mass effect upon the spinal cord. There is increased T2 signal intensity within the left-sided facet joint at this level. At T12-L1, there is a left paracentral disc herniation, which causes mild narrowing of the spinal canal, as well as moderate to severe left neural foraminal narrowing, but no significant right neural foraminal narrowing. At L1-L2, there is a disc bulge with considerable narrowing of the central spinal canal with impingement upon the nerve roots. The neural foramina are mildly narrowed bilaterally. At L2-L3, there is a disc bulge and facet hypertrophy with moderate to severe narrowing of the spinal canal. There is also mild left and moderate right neural foraminal narrowing. At L3-L4, there is a disc bulge and facet hypertrophy with severe narrowing of the spinal canal and the neural foramina are moderately narrowed bilaterally. At L4-L5, there is moderate disc bulge without narrowing of the central spinal canal and mild right and moderate left neural foraminal narrowing. At L5-S1, there is facet hypertrophy and a disc bulge with a superimposed left neural foraminal extrusion that results in severe left neural foraminal narrowing, but no significant spinal canal or right neural foraminal narrowing. The vertebral body heights are preserved. The bone marrow signal is unremarkable. There is atrophy of the paraspinal muscles.
1. A subcentimeter lesion in the spinal canal at the T11 level, adjacent to the left facet joint with an effusion may represent a synovial cyst or less likely a disc sequestration and causes minimal mass effect upon the spinal cord. 2. Lumbar scoliosis and 10 mm left lateral listhesis at L1-L2. 3. Multilevel degenerative spondylosis affecting the lumbar spine with considerable spinal canal and neural foraminal narrowing at certain levels.