stenosis, encroachment, narrowing, herniation, decompression, compression, opening, enlargement, space, aperture, impaction, herniations, test, level, zone, height, lines, canal, veins, area, osteophytes, obstruction, compromise, impingement, openings, tubule, region, size, injection, approach, fat, tube, widening, disease, disc, canals, entrapment, involvement, cone, entrance, dimensions, exit, margins, wall, contents, window, gutters, portion, ligament, lip, closure, diameter, spaces, extension, toothplate, hnp, tubules, constriction, extrusion, margin, atresia, traits, breadth, expansion, occlusion, pathology, discectomy, lesion, outlets, spurs, ligaments, patency, violation, muscles, anatomy, outlet, vein, length, rim