CT in children could triple risk of brain cancer

12 07 2012

Expose a child to nuclear radiation from two or three CT scans (TC) the head you can triple your risk of developing brain cancer later in life, According to a study of 20 year published in the magazine The Lancet.

The investigation also revealed that a child exposed to radiation accumulated between five and 10 TC is three times more likely than a guy without that exposure to develop leukemia. Although the absolute risk of developing cancers after a CT scan yet is small, the researchers said that radiation doses should be kept to a minimum and use another option when you can. “It is well known that radiation can cause cancer, but there is a scientific debate about whether the relatively low doses of radiation, as those received from TC, they increase the risk of cancer and, If it is so, What size are these risks”, said researcher Amy Berrington de González.

“Ours is the first study that provides direct proof of a relationship (…) and also we were able to quantify that risk”, added the expert of the National Cancer Institute, part of the national institutes of health United States, who worked on the study with colleagues from Great Britain and Canada. The CT scan is a diagnostic technique that is often used in children with possible injury to the head.

The risk of developing cancer comes from ionizing radiation used in the TC. The risk of higher in children, you are more sensitive to radiation than adults. An alternative to the TC is the ultrasound, that does not include radiation, but it is less precise. In the current study, published in the medical journal The Lancet, researchers studied nearly a 180.000 patients who had undergone CT between 1985 and the 2002 in a British hospital.

The team extracted the amount and types of TC records and estimated the amount of radiation absorbed by the brain and the spinal medical. These data were crossed with cancer cases and deaths for the record national of the service of health of the United Kingdom between 1985 and the 2008. A total of 74 de 178.604 patients were diagnosed with leukemia and 135 de 17of587 they were diagnosed with brain cancer. For its part, David Spiegelhalter, expert understanding of risk at Cambridge University who did not participate directly in the research, He said that the results should be placed in context.

“This study suggests that you there are about 1 in 10.000 chances of a young person to develop leukemia by a CT scan in the next 10 years”, pointed out in a comment. “This is important, but a CT scan may be even more important for the evaluation to be performed”, added Spiegelhalter.


Abcdelbebe.com [en línea] Bogotá(COL): abcdelbebe.com, 12 in July of 2012 [REF. 07 in June of 2012] Available on Internet: http://www.abcdelbebe.com/Nino/24-48-Meses/Salud/tomografias-en-Ninos-podrian-triplicar-Riesgo-de-cancer-cerebral



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13 07 2013
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