You may have read the other day about the big Stanford study on double mastectomies. Researchers looked at outcomes for every women in California diagnosed with early-stage breast cancer from 1998 to 2011 — – all 189,734 of them — and found, surprisingly, that removing both breasts doesn’t increase breast cancer survival rate.
Women who had breast-conserving surgery had an 83.2 percent survival rate at 10 years, compared with 81.2 percent for those who had a double mastectomy.
“What it means is that women should be aware that if they choose double mastectomy, the chances are that it won’t cause them to live any longer than if they had chosen something else,” said Stanford professor Allison Kurian, lead author of the study.
Perhaps even more surprising than the lack of evidence to recommend double mastectomies is the discovery that, from 1998 to 2011, the procedure had risen among the large population studied from 2 percent to 12 percent. And for women under 40, the rate increased from 3.6 percent to a whopping 33 percent, “even though most of them had stage zero or stage one cancer, a very early, very treatable form,” NPR reports.