 Cervical spine:Metallic artifact from the patient's braces distorts the images at the level of C2-C6.A small syrinx is seen at the level of C5-C6 measuring up to 1.5 cm in length (image 9, series 501). The cervical cord is otherwise normal in signal. The cerebellar tonsils extend below the level of the foramen magnum approximately 10 mm and demonstrate a pointed morphology. On the CSF flow images, there is maintained biphasic flow anterior and posterior to the tonsils. The cervicomedullary junction is normal. The visualized paraspinal contents are unremarkable. Alignment is normal. The marrow signal is benign. No significant central canal or neural foraminal narrowing.Thoracic spine:There is a smooth, physiologic thoracic kyphotic curve. The vertebral body heights and disc spaces are maintained. Marrow signal intensity is benign throughout. The spinal cord has a smooth contour and is without focal atrophy, edema, or myelomalacia. There are no masses. No central canal or neural foraminal narrowing.Lumbar spine:Alignment is anatomic. There are no fractures or subluxations. The marrow signal is benign. The conus is normal in signal and morphology and terminates at an appropriate level. The visualized intra-abdominal and paraspinal contents are unremarkable. No central canal or neural foraminal narrowing.
1.10 mm caudal extension of the cerebellar tonsils below the level of the foramen magnum is again noted, with maintained biphasic CSF flow around the tonsils anteriorly and posteriorly.2.Small syrinx is seen in the lower cervical spinal cord.