 BRAIN: There are postoperative findings related to suboccipital craniectomy and C1 laminectomy as well as duraplasty and tonsillopexy. There is minimal T2 hyperintensity within the residual cerebellar tonsils as well as within the bilateral biventral lobules. There are also punctate foci of susceptibility effect within the right biventral lobule, as well as in the posterior medulla, which are compatible with blood products. There is mild tenting of the inferior left cerebellar hemisphere towards the overlying dura. The neo-foramen magnum is patent with intact biphasic CSF flow anteriorly and posteriorly up to the area of the mildly deformed posterior cerebellar hemisphere. There appears to be minimal fluid posteroinferior to the duraplasty site. There is no evidence of acute infarct. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact.CERVICAL SPINE: 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. The spinal cord displays normal signal and morphology without evidence of syringohydromyelia.
1. Postoperative findings related to recent Chiari decompression with a small focus of hemorrhage in the right biventral lobule, as well as in the posterior medulla. 2. Mild deformity of the posterior cerebellum with possible adhesion formation with the overlying dura. Otherwise, the neo-foramen magnum is patent with normal CSF flow dynamics and no residual tonsillar herniation.3. No evidence of syringohydromyelia. I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.