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Information Journal Paper

Title

Natural environmental gamma radiation exposure and prevalence of breast cancer in Poç os de Caldas, MG, Brazil

Pages

  413-418

Abstract

 Background: Environmental ionizing radia on has been associated with increased cancer risk by several studies. The Brazilian city of Poç os de Caldas, MG, seats on a huge deposit of uranium, which was un l recently mined. We performed a retrospec ve analysis of 310 cases of pa ents with breast cancer, who were exposed for at least ten years to different levels of ionizing radia on around their homes, to verify whether a correla on existed between disease incidence, prevalence, and exposure. Materials and Methods: Gamma radia on was measured on the roads and the urban street grid. We retrieved the clinical files of 310 pa ents from the Popula on-Based cancer registry of Poç os de Caldas city, MG, Brazil and compared the local prevalence and incidence of breast cancer per city district to the local effec ve doses. Results: Effec ve doses of radia on around pa ents’ homes varied from 0. 72 and 1. 30 mSv/year, with 70% of the homes exposed to doses > 1. 0 mSv/year. When considered the number of cases in the study in rela on to the adult female popula on of the city, the incidence of female breast cancer was 25. 9% higher than the na onal average incidence for the same period, 2003-2011 (68. 32/100, 000 versus 50. 61/100, 000 respec vely). Conclusion: The higher incidence of breast cancer among the adult female popula on of Poç os de Caldas may be associated with chronic exposure for ten or more years to effec ve doses equal or slightly above the interna onal reference dose of 1. 0 mSv/year. Other known risk factors for breast cancer in our pa ents were not different from those found na onwide.

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    APA: Copy

    L. Merola, Y. de, da Cunha, Ta. Neves, Schenka, A.A., & Silva, N.C.. (2017). Natural environmental gamma radiation exposure and prevalence of breast cancer in Poç os de Caldas, MG, Brazil. INTERNATIONAL JOURNAL OF RADIATION RESEARCH, 15(4), 413-418. SID. https://sid.ir/paper/286898/en

    Vancouver: Copy

    L. Merola Y. de, da Cunha Ta. Neves, Schenka A.A., Silva N.C.. Natural environmental gamma radiation exposure and prevalence of breast cancer in Poç os de Caldas, MG, Brazil. INTERNATIONAL JOURNAL OF RADIATION RESEARCH[Internet]. 2017;15(4):413-418. Available from: https://sid.ir/paper/286898/en

    IEEE: Copy

    Y. de L. Merola, Ta. Neves da Cunha, A.A. Schenka, and N.C. Silva, “Natural environmental gamma radiation exposure and prevalence of breast cancer in Poç os de Caldas, MG, Brazil,” INTERNATIONAL JOURNAL OF RADIATION RESEARCH, vol. 15, no. 4, pp. 413–418, 2017, [Online]. Available: https://sid.ir/paper/286898/en

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