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More Women Choose to Remove Noncancerous Breasts

Study: Prophylactic Mastectomy Increasing as Acceptance of Procedure Grows
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WebMD Health News
Reviewed by Louise Chang, MD

Sept. 28, 2009 -- In the first study to define how many American women are undergoing prophylactic mastectomy, researchers have found that the number of women choosing to have the protective procedure is on the rise. 

Prophylactic mastectomy is the removal of a healthy breast in order to reduce risks of developing breast cancer.  According to the study’s results, the number of patients in New York State who had a healthy breast removed after a cancer diagnosis more than doubled between 1995 and 2005, even though the total number of women having mastectomies dropped by one-third.  The rate of women who underwent the procedure without having any breast cancer at all only rose slightly during this period. 

“It’s true that women who decide to have prophylactic mastectomies end up with a ‘virtually zero’ risk of having breast cancer.  But my patients say, ‘It’s not even the medical issue; it’s the anxiety.’ They just don’t want to worry about getting it in the other breast some day,” explains breast cancer surgeon Rache Simmons, MD, FACS, of New York-Presbyterian Hospital/Weill Cornell Medical Center.  “I have never had a patient regret that decision,” says Simmons, who was not involved in the study. 

Simmons estimates that she performs 10 times as many double mastectomies in patients with one non-cancerous breast than she did 10 years ago.  Part of the reason: the much wider availability and awareness of genetic testing for the BRCA1 and BRCA2 mutations, she tells WebMD.  These gene mutations are associated with an 85% lifetime risk of developing breast cancer and a much higher chance of tumors appearing in both breasts, according to the American Cancer Society.

Greater social acceptance of double mastectomies and improved cosmetic surgery techniques are additional reasons for the growing numbers, says Simmons.

Of the 6,275 women who had prophylactic mastectomy in the study, 81% of them had been diagnosed with cancer in one breast.  The rest had no personal history of breast cancer, suggesting they had high risk factors for breast cancer such strong family history and positive BRCA test results.

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