The goal of this observational study is to learn if refined anatomical location-combined with molecular biomarkers-can predict surgical success and long-term survival in 450 adults and children with cerebellar gliomas who underwent microsurgical resection at a single center between 2014 and 2024. The main questions it aims to answer are:
1. Does tumor location (cerebellar hemisphere, vermis, fourth ventricle, or pontocerebellar-angle region) independently influence extent of resection and overall survival after adjustment for WHO grade and molecular profile?
2. Among IDH-wild-type low-grade gliomas, does gross-total resection plus early adjuvant radiotherapy improve 5-year overall and progression-free survival compared with lesser resection or radiotherapy omission?
Researchers compared four anatomical subgroups and multiple molecular subtypes (IDH, 1p/19q, MGMT, TERT, BRAF V600E) to quantify location-specific resection rates, complication rates, and survival outcomes. Participants underwent standardized pre-operative imaging, microsurgical resection with intra-operative monitoring when indicated, post-operative MRI within 48 h to quantify residual tumor, and longitudinal clinical and radiographic follow-up every 3-12 months for up to 10 years.