Diffuse Pediatric High Grade Gliomas

Area of Science:

• Neuro-oncology
• Pediatric Radiology
• Molecular Pathology

Background:

• High-grade gliomas (HGGs) in children differ significantly from adult counterparts.
• Recent molecular and genomic advancements have refined HGG classification.
• Three novel HGG entities are now recognized within the updated classification.

Purpose of the Study:

• To review and present the characteristic MR imaging findings of newly classified pediatric HGG entities.
• To correlate imaging findings with molecular/genomic classifications.
• To describe prognostic features and provide practice recommendations.

Main Methods:

• Comprehensive literature review of published studies on pediatric HGGs.
• Analysis of structural and advanced MR imaging characteristics.
• Synthesis of data on molecular classifications and prognostic indicators.

Main Results:

• Detailed descriptions of MR imaging features for each distinct pediatric HGG entity.
• Identification of key imaging biomarkers differentiating these entities.
• Summary of prognostic factors, especially for diffuse midline gliomas (K27M-mutant).

Conclusions:

• Molecular and genomic testing are crucial for accurate pediatric HGG diagnosis and classification.
• Characteristic MR imaging findings aid in identifying these specific entities.
• Understanding these features is essential for prognostication and guiding clinical management.