1 Disc dehydration and endplate changes 2 Annular bulge and annular fissure 3 Disc protrusion
4 Disc extrusion 5 Disc extrusion 6 Disc free fragment
7 Disc extrusion (foraminal) 8 Epidural hematoma 9 Epidural hematoma and disc extrusion
10 Paradiscal cyst 11 Paradiscal cyst 12 Developmental central canal stenosis
13 Acquired central canal stenosis 14 Epidural lipomatosis 15 Degenerative spondylolisthesis
16 Facet joint synovial cyst 17 Hemorrhagic/proteinaceous facet joint synovial cyst 18 Juxta-articular cyst
19 Hypermobility 20 Hypermobility and facet joint synovial cyst 21 Hypermobility and disc extrusion
22 Degenerative scoliosis 23 Diffuse idiopathic skeletal hyperostosis 24 Juvenile discogenic disease
25 Acute/subacute apophyseal ring avulsion 26 Chronic apophyseal ring avulsion 27 Chronic pars defects
28 Chronic pars defects with spondylolisthesis 29 Subacute pars fractures 30 Subacute pedicle fractures
31 Posterior element stress reaction without fracture 32 Unilateral pars defect 33 Sacral insufficiency fracture
34 Transitional segment 35 Conjoined nerve roots