VA and LP shunt with Chiari and pseudotumor cerebri. Evaluate for changes, chronic headaches. Restarted on Lasix for CSF. The cerebellar tonsils are slightly more caudal compared to prior study with the tip at the level of the superior aspect of the anterior arch of C1 as compared top previous tip of dens, without significant interval head position change. There are stable postoperative findings related to suboccipital craniectomy and posterior fossa shunting. There is no acute infarct, mass effect, or acute hemorrhage. There are slightly decreased minimal bilateral cerebral convexity subdural effusions. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The skull and extracranial soft tissues are unchanged. There is hardware related susceptibility effect posteriorly. There is robust biphasic CSF flow along the ventral and dorsal aspects of the neo-foramen magnum, with minimal flow demonstrated dorsal to the tonsils.
Slight increased caudal positioning of the cerebellar tonsils. Otherwise stable postoperative findings related to Chiari decompression.