摘要
To the Editor:Meningiomas are the most common central nervous system neoplasms.[1] The World Health Organization (WHO) 2016 classification system classifies meningiomas into three grades:grade Ⅰ (benign),grade Ⅱ (atypical),and grade Ⅲ (anaplastic/malignant) meningioma.[1] Benign meningiomas are usually associated with favorable prognosis;however,higher grade (WHO grades Ⅱ and Ⅲ) menigiomas are more aggressive,resulting in less favorable outcome.
基金
This study was supported by a grant from the Natural Science Foundation of Zhejiang Province, China (No. LQ13H160007).
