Chiari malformation decompression and shunt, with new symptoms of headache and dysphagia. Brain: There are postoperative findings related to Chiari malformation decompression, with unchanged low-lying cerebellar tonsils to the level of the dens and diminished cerebrospinal fluid flow across the neo-foramen magnum. The brain parenchyma is otherwise unremarkable and the ventricles are not enlarged. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is no midline shift or herniation. The orbits are grossly unremarkable. There is diffuse paranasal mucosal thickening. 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. The paravertebral soft tissues are unremarkable.
1. Postoperative findings related to Chiari malformation decompression, with unchanged low-lying cerebellar tonsils to the level of the dens and diminished cerebrospinal fluid flow across the neo-foramen magnum. 2. No evidence of syringohydromyelia. 3. Diffuse paranasal mucosal thickening. 