Pre-surgical Embolization of Meningiomas: Analysis of Safety and Efficacy in a Mexican National Center And Proposal for a Classification of Preoperative Embolization of Meningiomas Based on Embolic Agent Penetration.

Introduction: Meningiomas are the most common primary central nervous system tumors, often requiring surgical resection. Presurgical embolization (PSE) is used to reduce intraoperative bleeding, although its effectiveness varies. This study evaluates the safety and efficacy of PSE using ethyl-vinyl alcohol (EVOH) in meningioma surgeries.