[Isolated fourth ventricle. Report of two cases].
D001927:Brain Diseases / Q000209:etiology; D002552:Cerebral Ventricles; D002557:Cerebrospinal Fluid Shunts; D002648:Child; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000601:surgery*; D007223:Infant; D008581:Meningitis / Q000150:complications*; D011183:Postoperative Complications