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The Risk Of Thyroid Cancer Increased After Subjection Of Children To Radiation.

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digital radiography newsAccording to the University of Rochester Medical Center research, when children are subjected to head and neck radiation, whether as a result of multiple diagnostic CT scans or cancer treatment, it causes the increase of risk of thyroid cancer along the next fifty-eight years or more.

The study was published in the December 2010 edition of the journal, Radiation Research, it involved a group of children subjected to medical radiation and followed up for thyroid cancer incidence. The data obtained through the study might offer some information related to the rates of thyroid cancer, why the rates continue to increase as the general public through more used screening exams for instance computed tomography (CT) is increasingly subjected to higher doses of radiation.

Lead author Jacob Adams, M.D., M.P.H., an associate professor in the Department of Community and Preventive Medicine at URMC mentioned that "Ionizing radiation is a known carcinogen and, in fact, about 1 million CT scans are performed every year on children five years or younger, Although CTs and other imaging tests are an important diagnostic tool and radiotherapy is an important treatment modality for cancer, with everything comes a risk. Our study attempted to measure the very long-term impact on thyroid cancer from medical irradiation. Our findings strongly suggest that those individuals exposed to irradiation from multiple CT scans to the head, neck and chest during early childhood and individuals treated with radiotherapy to the upper body as children have a lifelong increased risk of thyroid cancer."

Indirectly, Adams and his colleagues assessed the future risks of modern patients by evaluating the rates of thyroid cancer in a group that was treated in Rochester, N.Y., between 1953 and 1987 with lower-dose chest radiotherapy. During infancy, the cohort had been treated for an enlarged thymus; health problem was the condition that doctors used to believe.

None of the radiation administered was for cancer, so that the research is not confounded by a susceptibility to the disease. Adams compared the health status of the group to their siblings who hadn’t exposed to radiation. Thyroid cancer happened in 50 of the 1,303 irradiated patients compared to13 only of the 1,768 siblings. The association between radiation and thyroid cancer remained strong even after finders searched for other factors that could attribute to thyroid cancer risk.

The Rochester study was funded by the James P. Wilmot Cancer Center at URMC and the National Heart Lung and Blood Institute. It affirmed that the researching of a pooled review of five earlier population studies, and adds to the literature by referring that, at least in children, the risk of cancer as a result of radiation exposure continues for a median of 57.5 years.


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