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Conexiant chevron_right Internal Medicine chevron_right Bilateral Mastectomy No Survival Benefit in Unilateral Breast Cancer
From the Journals

Bilateral Mastectomy: No Survival Benefit in Unilateral Breast Cancer

A large study found that double mastectomy greatly reduced the risk of developing cancer in the opposite breast but did not improve breast cancer−specific survival , challenging the assumption that the surgery benefits women with cancer in only one breast.

Conexiant
5 Key Takeaways

  • 1

    A study analyzed data from 661,270 women with unilateral breast cancer, challenging the survival benefit of bilateral mastectomy.

  • 2

    The 20-year breast cancer-specific mortality was similar across lumpectomy, unilateral, and bilateral mastectomy groups, at approximately 16.7%.

  • 3

    Bilateral mastectomy reduced the risk of contralateral breast cancer but did not improve overall survival compared to unilateral surgery.

  • 4

    The cumulative risk of contralateral breast cancer was higher for ductal carcinoma in situ patients compared to those with invasive cancer.

  • 5

    The study highlighted the need for accurate risk and benefit information for patients considering bilateral mastectomy for unilateral breast cancer.

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