Male, 20 years old, history of Chiari malformation status post decompression surgery with chronic daily headaches. Brain:Evidence of Chiari decompressive surgery is again seen with expansion of the foramen magnum and a stable appearance of the cerebellar tonsils. The CSF space at the level of the foramen magnum is well expanded with the exception of slight narrowing ventrally due to a mild retroflexion of the dens, all stable findings. Adequate biphasic flow is seen both anteriorly and posteriorly through the foramen magnum.Brain parenchymal morphology is otherwise unremarkable. No evidence of restricted diffusion or other signal abnormality is seen. No intracranial hemorrhage or any abnormal extra axial fluid collection is detected. The ventricular system is patent and normal in size. No pathologic enhancement is seen.Spine:The spinal cord demonstrates normal signal intensity and morphology. No evidence of six formation is seen. The conus terminates normally at the L1 level. The nerve roots of the cauda equina dispersed evenly. No evidence of any intraspinal fatty lesion is seen. No evidence pathologic enhancement is seen.Spinal alignment is anatomic. Vertebral body morphology is normal. No worrisome marrow signal changes are seen. A nonspecific subcentimeter focus of T2 hyperintensity within the C5 vertebral body stable. No significant degenerative disc disease is seen. No spinal canal or neuroforaminal stenosis is detected.
1.Stable findings compatible with Chiari decompressive surgery. The CSF space at the foramen magnum remains well-expanded and adequate CSF flow is seen both dorsally and ventrally.2.Unremarkable evaluation of the spine. Particular, no evidence of any syrinx or other spinal cord abnormality is seen.