Chiari decompression with worsening headache and difficulty swallowing. Brain: There are postoperative findings related to Chiari decompression surgery. There is persistent tenting of the posteroinferior cerebellum to the overlying dura associated with intervening hypointense bands. There is also blunted cerebrospinal fluid flow across the posterior aspect of the neo-foramen magnum. Otherwise, there is intact cerebrospinal fluid flow across the anterior neo-foramen magnum and the inferior cerebellum extends to the level of tip of the dens, which is unchanged. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. The ventricles are slightly smaller in . There is no midline shift. The major cerebral flow voids are intact. The orbits and paranasal sinuses are grossly unremarkable.Cervical Spine: The spinal cord displays normal signal and morphology, without evidence of syrinx. The vertebral column alignment is unchanged, with paucity of the usual cervical lordosis. 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 surgery with persistent evidence of adhesion formation along the posteroinferior cerebellum.2. No evidence of syringohydromyelia in the cervical spinal cord.