About The Study: This cohort study indicates that the risk of dying of breast cancer increases substantially after experiencing a contralateral breast cancer. Women with breast cancer treated with bilateral mastectomy had a greatly diminished risk of contralateral breast cancer; however, they experienced similar mortality rates as patients treated with lumpectomy or unilateral mastectomy.
Corresponding Author: To contact the corresponding author, Steven A. Narod, M.D., email steven.narod@wchospital.ca .
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(doi:10.1001/jamaoncol.2024.2212)
Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.
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JAMA Oncology