Shunt Revision in Tumor-Related Hydrocephalus in Pediatric Patients

Introduction: Tumor-related hydrocephalus (HCP) is a common manifestation in pediatric brain tumors, frequently managed with a Ventriculo-peritoneal (VP) shunt. This study aims to identify the rate and predictors of shunt revision and functional outcomes in our cohort.

Methodology: This retrospective, monocentric study was undertaken, including the pediatric patients from the age of 0-16 years with a diagnosis of intracranial tumor and hydrocephalus, who underwent shunt placement at our center. Demographics, tumor and shunt characteristics, and revision outcomes were analyzed using univariate and multivariate logistic regression.

Results: Among 48 pediatric patients with tumor-related hydrocephalus who underwent VP shunt placement, 33.3% (16) required revision. The cohort had a mean age of 8.5 ± 3.4 years; 54.2% were male. Posterior fossa tumors were most common (66.7%), with medulloblastoma (27.1%) and ependymoma (18.8%) as leading tumor types. At baseline, 50% of children had moderate hydrocephalus; all received fixed-pressure VP shunts. Logistic regression identified that inadequate initial shunt placement was significantly associated with revision (OR = 0.064, 95% CI: 0.012–0.341, p = 0.001), indicating a 94% reduction in risk with proper placement. Valve type also significantly predicted revision (OR = 17.3, 95% CI: 1.31–228.7, p = 0.030). Tumor location, tumor type, hydrocephalus severity (Evans Index), and timing of shunt placement were not predictive. CSF picture significantly influenced the choice of revision procedure (p = 0.027), with infected cases undergoing external ventricular drainage followed by delayed shunt replacement. No significant improvement in ventricular size was observed post-revision (p = 0.119). Functional outcomes varied, with only 50% achieving good recovery. Neurodevelopmental delay was strongly associated with poor outcome (p = 0.003).

Conclusion: The findings underscore that optimal initial shunt placement and appropriate valve selection are crucial in minimizing revision risk.

Conflict of Interest: None

Funding: None

License: This article is published under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0).

©️ Zuhaa Rehman, 2025. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.