Hydrocephalus Management in Pediatric Posterior Fossa Tumors

Children with posterior fossa tumours frequently develop obstructive hydrocephalus due to compression of the fourth ventricle or aqueduct. Effective management aims to relieve intracranial pressure, reduce perioperative morbidity and limit long-term dependency on cerebrospinal fluid (CSF) diversion. Core strategies include temporary external ventricular drainage (EVD), endoscopic third ventriculostomy (ETV) and ventriculoperitoneal shunting (VP shunt). Recent advances focus on preoperative risk stratification and tailored perioperative protocols. Total tumour resection often alleviates hydrocephalus, whereas partial removal, midline location and larger tumour volume are associated with persistent CSF circulation impairment. Age, preoperative ventricular indices and tumour histology further influence the need for postoperative diversion. A multidisciplinary approach, integrating neurosurgical, anaesthetic and neuro-critical care expertise, underpins improved outcomes in this high-risk population.

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Hydrocephalus Management in Pediatric Posterior Fossa Tumors publication trend

The graph below shows the total number of articles in hydrocephalus management in pediatric posterior fossa tumors across all publications each year (not limited to Nature Index journals).

Technical terms

External ventricular drainage (EVD): A temporary catheter system that diverts CSF from cerebral ventricles to an external collection device to control intracranial pressure.

Endoscopic third ventriculostomy (ETV): A minimally invasive procedure creating an aperture in the floor of the third ventricle to bypass obstructed CSF pathways.

Ventriculoperitoneal (VP) shunt: A permanent implant that channels CSF from the ventricular system into the peritoneal cavity to relieve hydrocephalus.

Intracranial pressure (ICP): The pressure within the skull, elevated in hydrocephalus due to accumulated CSF.

Artificial neural network (ANN): A computational model that processes complex datasets by mimicking neuronal connections, used here to predict postoperative hydrocephalus risk.

References

1. Artificial neural networks predict the need for permanent cerebrospinal fluid diversion following posterior fossa tumor resection. Neuro-Oncology Advances (2022).
2. Placement of EVD in pediatric posterior fossa tumors: safe and efficient or old-fashioned? The Vienna experience. Child's Nervous System (2023).
3. Perioperative external ventricular drainage vs. no-EVD strategy in pediatric posterior fossa tumors—pilot study results. Child's Nervous System (2023).
4. Endoscopic third ventriculostomy before surgery of third ventricle and posterior fossa tumours decreases the risk of secondary hydrocephalus and early postoperative complications. Neurosurgical Review (2021).
5. Predictive factors for persistent postoperative hydrocephalus in children undergoing surgical resection of periventricular tumors. Frontiers in Neurology (2023).