title: Transtentorial herniation of the fourth ventricle.
abstract: Transtentorial herniation (TTH) of the fourth ventricle is the result of a progressive enlargement of an isolated fourth ventricle which herniates through the tentorial incisure into the middle cranial fossa. The characteristic CT-MR and neurosonographic findings are described.
mesh_terms: D002543:Cerebral Hemorrhage / Q000150:complications; D002552:Cerebral Ventricles / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000473:pathology; D014695:Cerebral Ventriculography; D003616:Dandy-Walker Syndrome / Q000150:complications; D004677:Encephalocele / Q000150:complications / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007235:Infant, Premature, Diseases / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male; D008588:Meningocele / Q000150:complications; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography