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A nomogram for predicting post-operative hydrocephalus in children with medulloblastoma
Wentao Zhou1, Heng Zhang1, Xu An1
1Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
Insights
A new nomogram model helps predict post-operative hydrocephalus in children with medulloblastoma. This tool identifies key risk factors like tumor invasion and intraventricular blood, aiding clinical decisions for pediatric neurosurgery patients.
Area of Science:
- Pediatric neurosurgery
- Oncology
- Medical imaging analysis
Background:
- Post-operative hydrocephalus is a frequent complication in pediatric medulloblastoma patients following tumor resection.
- Accurate prediction of this complication is crucial for timely intervention and improved patient outcomes.
Purpose of the Study:
- To develop and validate a novel predictive model (nomogram) for post-operative hydrocephalus in pediatric medulloblastoma patients.
- To identify significant risk factors associated with the development of hydrocephalus after surgery.
Main Methods:
- Retrospective analysis of pediatric patients undergoing medulloblastoma resection (January 2018 - March 2022).
- Multivariate logistic regression and nomogram construction to identify risk factors.
- Receiver Operating Characteristic (ROC) curve analysis for model validation using an independent cohort.
Main Results:
- Superior invasion, caudal invasion, and intraventricular blood ≥5 mm were identified as significant predictors.
- The nomogram demonstrated good predictive performance with an Area Under the ROC Curve (AUC) of 0.849 (primary cohort) and 0.855 (validation cohort).
- Calibration curves confirmed the model's accuracy in predicting hydrocephalus development.
Conclusions:
- The developed nomogram provides a valuable tool for clinicians to assess the risk of post-operative hydrocephalus in pediatric medulloblastoma patients.
- This model can assist in decision-making regarding diversionary procedures, particularly for high-risk individuals.
Abstract:
Post-operative hydrocephalus is common among children with medulloblastoma after initial tumor resection. This study aimed to establish a novel model for predicting the development of post-operative hydrocephalus in children with medulloblastoma. Only pediatric patients who received initial medulloblastoma resection at Beijing Tiantan Hospital between January 2018 and May 2021 were included in this study. The potential risk factors associated with post-operative hydrocephalus were identified based on multivariate logistic regression and the nomogram. Receiver operating characteristic (ROC) curve were used to evaluate the performance of the nomogram model based on an independent cohort of medulloblastoma patients who underwent surgery from June 2021 to March 2022. A total of 105 patients were included in the primary cohort. Superior invasion (P = 0.007), caudal invasion (P = 0.025), and intraventricular blood ≥ 5 mm (P = 0.045) were significantly related to the development of post-operative hydrocephalus and thus were assembled into the nomogram model. The model accurately predicted post-operative hydrocephalus based on the calibration curve. The area under the ROC curves for the primary and validation cohorts was 0.849 and 0.855, respectively. In total, the nomogram we developed may aid clinicians in assessing the potential risk of pediatric patients with MB developing post-operative hydrocephalus, especially those who would otherwise not have received a diversionary procedure at presentation.
