Sequestered fourth ventricle.
Aoki
N
N
D001927:Brain Diseases / Q000601:surgery; D002552:Cerebral Ventricles / Q000601:surgery*; D006801:Humans; D006849:Hydrocephalus / Q000601:surgery; D013238:Stereotaxic Techniques; D017287:Ventriculoperitoneal Shunt / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*