Arquivos de neuro-psiquiatria
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Atypical/anaplastic (World Health Organization (WHO) grades II and III) are less common and have poorer outcomes than benign meningiomas. This study aimed to analyze the outcome of patients with these tumors. ⋯ Age <60 years-old, grade II tumors and de novo meningiomas were the main predictors for better prognosis among patients with grades II and III meningiomas.