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Epidemiology of Supratentorial High-Grade Gliomas in Children

This page was last updated on May 9th, 2017

Incidence and Prevalence

  • 0.5–0.7 per 100,000: The incidence of HGGs is low, with 5–7 children per 1,000,000 afflicted.

Incidence of HGG In Children: Age-specific incidence rates by anatomic site are shown

Adapted from Ries et al (33)

 

  • Minority of CNS tumors anaplastic: Only 15–20% of all pediatric CNS tumors are HGGs (4). 20% of hemispheric gliomas in children are AAs or GBMs (1), and only 6.5% of newly diagnosed brain tumors in children are HGGs (2). 

Age Distribution

  • Even distribution with regard to age: The mean age of presentation of GBM is 9 years (5). In the US, GBM represents 2.8% of primary brain tumors in children ages 0–14 years and 3.2% in children 15–19 years (3).

Sex Predilection

  • Even sex distribution: The male:female ratio for HGG in children is 1:1 (4).

Geographic Distribution

  • None: There are no data to imply any geographical influence with regard to the incidence or prevalence of HGG in children.

Risk Factors

  • No definitive evidence: Diet, tobacco use, and occupational exposures have been implied as risk factors in developing HGG, but there is no definitive evidence for environmental risk factors contributing to HGG (6).
  • Prior radiation: Previous cranial radiation in childhood increases the risk of developing a HGG (7).

Relationships to Other Disease States and Syndromes

  • Syndromes associated with CNS tumors: Other disease states such as TSC, Turcot syndrome, Li Fraumeni syndrome, and neurofibromatosis type 1 are associated with increased risk for both LGGs and HGGs.

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