Chiari decompression with dura patch, syrinx, still with symptoms: neck pain. There are postoperative findings related to Chiari decompression. There is a fluid collection overlying the duraplasty that measures up to 6 mm in thickness, previously 12 mm. There is a holocord syrinx that measures up to 8 mm in width. CSF flow is present across the anterior and posterior aspects of the neo-foramen magnum. 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.
Interval evolution of postoperative findings related to Chiari decompression with decrease in size of the pseudomeningocele, but persistent holocord syrinx.