Incidence and Prevalence
- 0.75 per 100,000 person-years for children 0–19 years of age in the United States: Cerebellar astrocytomas comprise approximately 15% of all pediatric brain tumors (42,500–45,000 childhood CNS tumors per year in the United States) and 25% of posterior fossa tumors in children. 70% of all cerebellar astrocytomas occur in children (6, 9, 11).
Age Distribution
- Childhood: Mean age at presentation is 7 years. Cerebellar astrocytomas are rare in children younger than 1 year of age (2).
Sex Predilection
- None: There is no reported sex predominance for cerebellar astrocytomas (3).
Geographic Distribution
- None known
Risk Factors
- None known
Relationships to Other Disease States and Syndromes
- None known
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