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.	International Conference on Radiation Shielding 2-7 Nov 2012 Nara, Japan

24 May 2012

Answer to Question #483 Submitted to "Ask the Experts"

Category: Pregnancy and Radiation — Radiation effects to embryo/fetus

The following question was answered by an expert in the appropriate field:

Is there any known correlation between fetal x-ray exposure and childhood cancers?

There are a few studies that suggest a correlation between radiation exposure of the developing embryo/fetus and childhood cancer. It should be emphasized that a statistical correlation does not necessarily mean causality. The largest and best known study is the Oxford Survey of Childhood Cancer (OSCC). OSCC results were first published in the 1950s and suggested a 50 percent increase in cancer risk for children exposed before birth. However, in some studies (e.g., Japanese survivors) OSCC findings have not been confirmed. Accordingly, it remains unclear whether x rays CAUSE cancer in children exposed before birth. Kenneth L. Mossman, Ph.D.

Answer posted on 14 November 2000. The information and material posted on this website is intended as general reference information only. Specific facts and circumstances may alter the concepts and applications of materials and information described herein. The information provided is not a substitute for professional advice and should not be relied upon in the absence of such professional advice specific to whatever facts and circumstances are presented in any given situation. Answers are correct at the time they are posted on the Website. Be advised that over time, some requirements could change, new data could be made available, or Internet links could change. For answers that have been posted for several months or longer, please check the current status of the posted information prior to using the responses for specific applications.