Cancer Causes & Control

, Volume 21, Issue 7, pp 1017–1023 | Cite as

Head injury, diagnostic X-rays, and risk of medulloblastoma and primitive neuroectodermal tumor: a Children’s Oncology Group study

  • Saira Khan
  • Alison A. Evans
  • Lucy Rorke-Adams
  • Manuela A. Orjuela
  • Tania Shiminski-Maher
  • Greta R. Bunin
Original paper

Abstract

Objective

A comprehensive case–control study was conducted to determine potential risk factors for medulloblastoma/primitive neuroectodermal tumor (PNET), a common brain tumor in children. This analysis evaluated possible associations between previous head injury and ionizing radiation exposure through diagnostic X-rays and medulloblastoma/PNET.

Methods

Mothers of 318 cases <6 years of age at diagnosis between 1991 and 1997 and registered with the Children’s Oncology Group were interviewed. Mothers of 318 matching controls were selected through random digit dialing and interviewed.

Results

An association was not detected between previous head injury (OR: 0.78, 95% CI: 0.40–1.5) or head X-ray for any reason including head injury with medulloblastoma/PNET. A statistically non-significant excess of cases reported having an X-ray for reason other than head injury (OR 2.3, 95% CI 0.91–5.7). When cases that received an X-ray for a common symptom of medulloblastoma/PNET were considered unexposed this association weakened (OR: 1.3, 95% CI: 0.49–3.7). No dose–response relationship was observed.

Conclusions

Head injury and exposure to diagnostic head X-rays were not associated with medulloblastoma/PNET in this study. Future studies should investigate all imaging procedures with ionizing radiation exposure including computed tomography scans and utilize radiation dose estimations.

Keywords

Brain neoplasms Radiography Craniocerebral trauma 

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Saira Khan
    • 1
    • 2
  • Alison A. Evans
    • 1
  • Lucy Rorke-Adams
    • 3
    • 4
  • Manuela A. Orjuela
    • 5
  • Tania Shiminski-Maher
    • 6
  • Greta R. Bunin
    • 7
    • 8
  1. 1.Department of Epidemiology and BiostatisticsDrexel University School of Public HealthPhiladelphiaUSA
  2. 2.Division of General PediatricsChildren’s Hospital of PhiladelphiaPhiladelphiaUSA
  3. 3.Departments of Pathology, Neurology, and PediatricsUniversity of Pennsylvania School of MedicinePhiladelphiaUSA
  4. 4.Department of PathologyChildren’s Hospital of PhiladelphiaPhiladelphiaUSA
  5. 5.Departments of Pediatrics and Environmental Health SciencesColumbia UniversityNew YorkUSA
  6. 6.Department of NeurosurgeryThe Children’s Hospital at MontefioreNew YorkUSA
  7. 7.Division of Oncology, Center for Childhood Cancer ResearchChildren’s Hospital of PhiladelphiaPhiladelphiaUSA
  8. 8.Department of PediatricsUniversity of Pennsylvania School of MedicinePhiladelphiaUSA

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