Female, 52 years old, with pain, history of Chiari decompression. Suboccipital craniectomy and resection of the posterior arch of C1 are again seen. The CSF spaces at the foramen magnum are well expanded. The cerebellar tonsils demonstrate a normal round morphology. On CSF flow imaging, biphasic flow is demonstrated both dorsally and ventrally through the surgically widened foramen magnum.Spinal alignment is anatomic. Vertebral body height and morphology are within normal limits. No evidence of edema or marrow replacement is seen. The visualized spinal cord shows normal signal characteristics throughout. There is no evidence of any spinal cord syrinx or other focal signal abnormality. No epidural lesions are suspected.C2-3: No spinal canal stenosis or neuroforaminal narrowing. C3-4: No spinal canal stenosis or neuroforaminal narrowing. C4-5: No spinal canal stenosis or neuroforaminal narrowing. C5-6: Minimal posterior disc-osteophyte complex formation. Minimal ligamentum flavum thickening. No significant spinal canal or foraminal stenosis. No interval changes. C6-7: Posterior disc-osteophyte complex formation and ligamentum flavum thickening. Mild generalized spinal canal stenosis. Moderate left and mild right foraminal narrowing due to projecting disc osteophyte. C7-T1: No spinal canal stenosis or neuroforaminal narrowing.
1.Redemonstrated findings compatible with prior Chiari decompression. The neo-foramen magnum appears to be well expanded with adequate space and flow both dorsally and ventrally.2.Degenerative findings are again seen in the cervical spine, most notably affecting C5-6 and C6-7. These have not significantly changed.