Chiari decompression with syrinx spine, yearly follow up: Back, shoulder, and neck pain, and headache. Brain: There are postoperative findings related to Chiari decompression and right tonsillar reduction. There is now encephalomalacia within the remaining right cerebellar tonsil and right biventral lobule. There is no evidence of pseudomeningocele. There is biphasic cerebrospinal fluid flow anteriorly and posteriorly across the neo-foramen magnum. The cerebellum extends to the level of the superior aspect of the odontoid. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. There is no evidence of acute infarction of hemorrhage.Spine: There has been interval decrease in caliber of the cervical and thoracic syringohydromyelia, which measures up to 5 mm in width, previously 7 mm. The vertebral column alignment is within normal limits. The vertebral body and disc space heights are preserved. The vertebral bone marrow signal is unremarkable. There is no significant spinal canal stenosis.
1. Expected postoperative findings in the posterior fossa related to prior Chiari malformation surgery. 2. Interval decrease in caliber of the cervical and thoracic syringohydromyelia