Back pain. There is congenital fusion of the C2 and C3 and C6 and C7 vertebrae associated with straightening of the cervical spine alignment in the sagittal plane, but no spondylolisthesis. The thoracic and lumbar spine alignments are normal. The vertebral bone marrow signal is unremarkable. There is no significant spinal canal stenosis. The spinal cord displays normal signal and morphology. There is a short segment of relatively high T1 signal in the posterior sacral canal that measures less than 2 mm in thickness. The conus medullaris is located at the level of L1-2. The paravertebral soft tissues are unremarkable. There is horseshoe kidney.
1. Congenital fusion of the C2 and C3 and C6 and C7 vertebrae with straightening of the cervical spine alignment in the sagittal plane.2. The conus medullaris is located at the level of L1-2. 3. A short segment of relatively high T1 signal in the posterior sacral canal may represent a fibrofatty filum terminale.4. Horseshoe kidney. 