Evaluate for brainstem pathology: third nerve palsy, ptosis, Chiari. There cerebellar tonsils extend approximately 12 mm inferior to the foramen magnum and have a pointed configuration. The brain parenchyma and brainstem appear unremarkable. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Findings compatible with Chiari type 1 malformation.