• Michael J Fritsch, Lutz Doerner, Sven Kienke, and H Maximilian Mehdorn.
• Department of Neurosurgery, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Kiel, Germany. fritschm@nch.uni-kiel.de
• J. Neurosurg. 2005 Jul 1;103(1 Suppl):40-2.

ObjectControversy exists regarding the indication for endoscopic third ventriculostomy (ETV) in children with hydrocephalus caused by posterior fossa tumors. The authors present their treatment modalities and discuss the role of ETV in the management of hydrocephalus.MethodsThe authors retrospectively reviewed the cases of 58 children who were admitted to their clinic consecutively with posterior fossa tumors between January 1999 and December 2003. Fifty-two patients presented with hydrocephalus. The mean age at the time of admission was 6 years and 3 months. The mean follow-up period was 25 months. The authors evaluated how many children required a cerebrospinal fluid (CSF) draining procedure (external ventricular drain [EVD], ventriculoperitoneal [VP] shunt, or ETV) prior to or following tumor removal. Only six patients (11.5%) required permanent treatment for hydrocephalus. Four patients received a VP shunt and two patients underwent ETV. A temporary EVD was placed in five patients (two required a shunt). Forty-six patients (88.5%) did not require a permanent CSF draining procedure.ConclusionsFor children with posterior fossa tumors, ETV is not indicated as a standard operation either prior to or following tumor removal. Only six of 52 children presenting with hydrocephalus required a permanent CSF draining procedure. Endoscopic third ventriculostomy may be suitable for patients with fourth ventricle outflow obstruction and persisting or progressive hydrocephalus following tumor removal.

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