A preoperative model using Evans index, tumor-fourth ventricle relationship, and preoperative CSF diversion status achieved good external discrimination for postoperative hydrocephalus after posterior fossa tumor resection.
Investigators developed and externally validated a machine learning model to stratify risk of postoperative hydrocephalus after posterior fossa tumor resection using data from 1,073 patients treated at five tertiary centers from 2013 to 2024. After screening 30 variables, they built a three-variable preoperative model using Evans index, tumor-fourth ventricle relationship, and preoperative CSF diversion status, with SVM showing AUC 0.877 in the external cohort.
- Impact 30%
- 49
- Evidence 25%
- 95
- Scale 20%
- 35
- Confidence 15%
- 87
- Recency 10%
- 86
Updated Jul 31, 2026 · TRV-2026-0600
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