Chiari malformation, post decompression, headaches, worsening symptoms. Brain: There are postoperative findings related to Chiari decompression surgery. The cerebellar tonsils extend to the level of C1, which is unchanged. There is no significant crowding of the neo-foramen magnum and there is apparent CSF flow across the anterior and posterior aspects of the neo-foramen magnum, similar to the prior exam. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift. The major cerebral flow voids are intact. The orbits are grossly unremarkable. There are a few scattered secretions in the paranasal sinuses. Cervical Spine: There has C1 laminectomy as part of the Chiari decompression surgery. There is no evidence of residual fluid collections in the surgical bed. 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.
Unremarkable findings related to Chiari decompression surgery without evidence of hydrocephalus, pseudomeningocele, or syrinx.