 Sagittal imaging is diagnostic. Axial imaging is degraded secondary to motion artifact. Given this caveat:Cerebellar ectopia is noted measuring 6-7 mm below the level of the foramen magnum demonstrating a mild peglike morphology. CSF flow analysis demonstrates the presence of biphasic CSF flow posteriorly at the level of the cerebellar tonsils.Alignment is anatomic. There are no fractures or subluxations. The marrow signal is benign. The cervical and upper thoracic cord are normal in signal. Postinflammatory cysts are noted in the nasopharynx. Otherwise the visualized paraspinal contents are unremarkable.C2/3: UnremarkableC3/4:UnremarkableC4/5: UnremarkableC5/6: Mild posterior osteophyte disc complex without stenosis.C6/7: Mild posterior osteophyte disc complex without stenosis.C7/T1: Unremarkable
Cerebellar ectopia is noted measuring 6-7 mm below the level of the foramen magnum demonstrating a mild peglike morphology. CSF flow analysis demonstrates the presence of biphasic CSF flow posteriorly at the level of the cerebellar tonsils.