Interpretation on pediatric⁃type diffuse gliomas in the 2021 WHO Classification of Tumors of the Central Nervous System (fifth edition)

Abstract

The 2021 WHO Classification of Tumors of the Central Nervous System (fifth edition) was released. One of the biggest differences between new edition tumors classification and the previous editions is that the pediatric ⁃ type diffuse low ⁃ grade gliomas and the pediatric ⁃ type diffuse high ⁃ grade gliomas are classified into independent tumor families. This change is based on the fact that although pediatric ⁃ type diffuse gliomas morphologically resemble their adult counterparts, while their molecular genetics features are completely different, and the prognosis of these tumors with different molecular genetics features is different accordingly, so different treatment strategies are needed. Physicians and surgeons need to know of the features of these pediatric ⁃ type diffuse gliomas. This paper reviews the existing literature, and the pathological reports and imaging data of our hospital, summarizes the imaging and pathological diagnostic features, as well as the clinical manifestations, prognostic features and treatment suggestions of these pediatric⁃type diffuse gliomas. This review will provide an annotation from the view of diagnosis and treatment on pediatric⁃type diffuse gliomas for the physicians and surgeons.

doi：10.3969/j.issn.1672⁃6731.2021.09.009