Low back and leg pain. There is what may represent rib hypoplasia at T12 versus accessory ribs at L1. There is transitional lumbosacral vertebral anatomy with partial sacralization of what corresponds to the L5 or L6 vertebra. There is slight anterolisthesis at L4 or L5 upon L5 or L6 associated with bilateral facet joint effusion and synovial cyst formation. There is also mild disc bulging and bilateral neural foraminal narrowing at this level. There is no significant degenerative disease in the rest of the lumbar spine. There are small sacral perineural cysts. The vertebral body heights are preserved. The vertebral bone marrow signal is unremarkable. There is no significant spinal canal stenosis. The spinal cord displays normal signal and morphology. The paravertebral soft tissues are unremarkable, aside from dependent edema in the posterior lower back subcutaneous tissues.
Transitional lumbosacral vertebral anatomy with partial sacralization of what corresponds to the L5 or L6 vertebra, depending upon the actual number or ribs, which can be confirmed via imaging of the entire thorax. There is mild anterolisthesis at L4 or L5 upon L5 or L6 associated with bilateral facet joint effusions and synovial cyst formation. There is also mild disc bulging and bilateral neural foraminal narrowing at this level. 