Using information from a California cancer registry, they looked at survival after double mastectomy, breast-conserving therapy (lumpectomy) with radiation, and single mastectomy (removal of one breast) in women who had early cancer in one breast. The registry didn't include genetic information that might have indicated raised breast cancer risk.
Death rates were similar between women having double mastectomy and breast-conserving surgery, the researchers said. However, the death rate associated with single mastectomy was higher than the other procedures. "That is not a new finding," Gomez said. The higher rate is thought to be linked with other factors, such as the presence of other health conditions.
Over 10 years, survival was 83 percent for those who had lumpectomy, 81 percent for those who underwent double mastectomy and nearly 80 percent for a single mastectomy.
The findings echo those of other recent studies, Gomez said.
Women need this information when deciding on the surgical treatment of their breast cancer, Gomez said.
Oftentimes, survival rates are just one of many factors a woman considers when weighing surgical treatment for breast cancer, she said. A common reason for double mastectomy is fear of cancer recurrence, even though the fear usually exceeds the estimated risk, she said.
For some women, aesthetics are a key consideration, the researchers wrote. Some newer reconstruction techniques produce better breast symmetry if both are reconstructed at the same time.
Being informed is essential, said Dr. Lisa Newman, director of the Breast Care Center at the University of Michigan, who wrote an editorial accompanying the study. "Overall, I think the important message [from this study] for our breast cancer patients is there is no overwhelming survi
All rights reserved