Chiari malformation, pseudotumor cerebri with LP shunt: headache, neck pain. Thre is unchanged extension of the cerebellar tonsils inferior to the foramen magnum up to 5 mm. Nevertheless, the cerebellar tonsils display rounded morphologies. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The brain parenchyma and pituitary gland appear unremarkable. The ventricles are unchanged 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.
Unchanged mildly low lying cerebellar tonsils.