Pediatric Aneurysms

Intracranial Aneurysms In Children (<18 Years Old) Are Rare

  • Reported prevalence ranging from .5% to 4.6%
  • Epidemiology poorly understood
  • Pediatric brain aneurysms occur more often in male patients
  • Male/ female occurrence is 1.8: 1
  • Subarachnoid hemorrhage was the most common presentation in 80% of the children
  • The most common overall location was the ICA terminus, which was the location in 26% of the cases
  • Only 17% occurred in the posterior circulation
  • One fifth of all aneurysms were giant lesions
  • The sex predominance (male/ female 1.8:1) may suggest the existence of differences in pathogenesis of aneurysm formation in the pediatric patient
  • One interpretation is that congenital factors present in all aneurysm patients may be expressed more in boys, but environmental factors may contribute to the increased incidence in girls
  • Aneurysms in the pediatric population are four times as likely to present with subarachnoid hemorrhage versus without subarachnoid hemorrhage
  • Pediatric aneurysms are twice as likely to be of a better grade
  • Of the published series of pediatric aneurysms, almost all the earliest series before 1981 were comprised of subarachnoid hemorrhage patients. Unruptured aneurysms were detected more often thereafter, a reflection in the improvement of neuroimaging techniques.
  • Posterior circulation aneurysms accounted for 17% of all pediatric aneurysms.

    Click here for our Youth Fact Sheet on brain aneurysms