History of Chiari decompression and for cervical syrinx. There are postoperative findings related to Chiari decompression. There is inferior extension of the cerebellar tonsils to the level of the dens with associated crowding of the neo-foramen magnum and diminished CSF flow anteriorly and posteriorly. The spinal cord displays normal signal and morphology, without evidence of syringohydromyelia. 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. Postoperative findings related to Chiari decompression with inferior extension of the cerebellar tonsils to the level of the dens associated with crowding of the neo-foramen magnum and diminished CSF flow anteriorly and posteriorly. 2. No evidence of syringohydromyelia. 