Chiari malformation, decompression, scar tissue to bovine patch, new symptoms, with numbness and tingling right hand, neck pain, and headache. Brain: There are postoperative findings related to Chiari decompression. There is mild tenting of the posteroinferior cerebellum with fine linear hyperintensities that extend to the overlying dura. The CSF flow across the posterior neo-foramen magnum appears to be perhaps slightly blunted. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma appears unremarkable. The ventricles are unchanged in size and configuration. There is no midline shift. The major cerebral flow voids are intact. The skull, paranasal sinuses, and scalp soft tissues are unchanged.Cervical Spine: The vertebral column alignment is unchanged. 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 unchanged.
1. Postoperative findings related to Chiari decompression with mild tenting of the posteroinferior cerebellum with fine linear hyperintensities that extend to the overlying dura, which may represent adhesions. 2. No evidence of syringohydromyelia in the cervical spine.