Shinjo D, et al. - As surgical resection is usually the first step in the treatment of pediatric brain tumors, researchers sought to gain evidence pertaining to a ‘volume effect’ in this surgery and to characterize the associations among the surgical volume, clinical features, and treatments. They retrospectively analyzed the data pertaining to pediatric patients (age ≤ 15 years) who underwent brain tumor resection surgery between April 2012 and March 2016 from the Japanese administrative inpatient database. Results support a volume-outcome relationship in pediatric brain tumor resection surgery cases. Comparable to other countries, this study demonstrated the crude in-hospital mortality ratio of 1.8%.