Radiation Therapy Outweigh Risks of a Second Cancer.

In a long-term study of more than 600,000 cancer survivors, an estimated 8 percent of second cancers were attributable to radiation treatment for the original cancer, according to the study.

The results suggest that other factors, such as lifestyle risks and genetics, cause the majority of second cancers, the researchers say.

The researchers looked at outcomes for 15 different types of cancer for which radiation treatment is routine, including cancers of the rectum, larynx, lung, breast, cervix, testicles, prostate, eye and orbit, brain and thyroid.

More than half of the second cancers developed in breast and prostate cancer survivors. Four percent of second cancers were in the eye, and 24 percent were cancer of the testicles, the researchers found. Read more…

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