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2001 APR 5 - (NewsRx.com & NewsRx.net) -- Women with a history of breast cancer are not at greater risk for developing colorectal cancer than women in the general public, according to a study headed by a researcher at the Johns Hopkins School of Public Health.
In fact, some women with breast cancer may be less likely to develop colorectal cancer compared to women who have not been diagnosed with breast cancer.
The findings, reported in the March 16, 2001, issue of The Lancet, challenge the notion that breast cancer increases the risk of colorectal cancer.
"Breast cancer history should not be thought of as a risk factor for colorectal cancer," says Craig J. Newschaffer, PhD, lead author of the study and assistant professor of epidemiology at the Johns Hopkins School of Public Health. "Overall we found that women with breast cancer were 5% less likely to have colon cancer and 13% less likely to develop rectal cancer compared to women in the general public."
For the study, Newschaffer and his colleagues used the Surveillance Epidemiology and End Result (SEER) database to select nearly 227,000 women who were diagnosed with first incident breast cancer between 1974 and 1995. The researchers then searched the database for cases of colon and rectal cancer among the women with breast cancer and compared them to women in the general public. The comparisons were then broken down by the woman's age at the time of breast cancer ...
Source: HighBeam Research, Breast Cancer Is Not A Risk Factor For Colorectal Cancer Among Women.