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Lyon (France)An analysis of 1,600 women carriers of mutations in the BRCA 1 or BRCA 2 cancer genes suggests that exposure to chest X-ray increases the risk of breast cancer, and that exposure before the age of 20 may be linked to particularly heightened risk. The research, conducted by a consortium of European cancer centers, was the first to analyze the impact of low-level X-ray exposure among women at genetically high risk for the disease. The study was published online June 26 in the Journal of Clinical Oncology.
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