Chiari malformation decompressed a few years ago, now returning with headaches and neck pain. Brain: There are postoperative findings related to Chiari decompression surgery. There is flow of cerebrospinal fluid across the neo-foramen magnum, both anteriorly and posteriorly. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift. The major cerebral flow voids are intact. The orbits are grossly unremarkable. There is no pseudomeningocele.Cervical Spine: There is minimal diffuse prominence of the central canal of the cervical spinal cord. There is mild straightening of the cervical spine, but no spondylolisthesis. The vertebral body and disc space heights are preserved. The vertebral bone marrow signal is unremarkable. There is a left neural foraminal disc-osteophyte complex that results in mild narrowing of the neural foramen. There is no significant spinal canal stenosis.
1. Postoperative findings related to Chiari decompression surgery with what appears to be adequate cerebrospinal fluid flow across the neo-foramen magnum. 2. Minimal diffuse prominence of the central canal of the cervical spinal cord. 3. No evidence of hydrocephalus or pseudomeningocele.4. Left neural foraminal disc-osteophyte complex that results in mild narrowing of the neural foramen, but no significant spinal canal stenosis. 