Breast Cancer: Have Mastectomy Rates Increased in the USA?

breast covered female body nude

Methods: Researchers used the Surveillance, Epidemiology, and End Results (SEER) database to identify women diagnosed with stage T1-2, N0-3 invasive breast cancer who had surgery between 2000 and 2008. Patient and tumor characteristics were compared for women undergoing mastectomy or breast conserving surgery.

Results: The findings were published in Annals of Surgical Oncology 2013; pages 1436 to 43. A total of 256,081 patients were identified. Overall 38% had mastectomy, and 61% had breast conserving surgery. The proportion treatment with mastectomy dropped from 40% in 2000 to 36% in 2005. Subsequently, the mastectomy rate increased to 38% in 2008.

Predictors of mastectomy included: Year of diagnosis, age (younger>older>middle aged), race (Asian/Pacific Islander>Hispanic>white>black), marital status (unmarried>married), geographic location, involvement of multiple regions of the breast, lobular type breast cancer, increasing T stage, lymph node involvement, increasing grade, and negative progesterone receptor (PR) status.

My take: Mastectomy rates initially decreased after 2000 in the USA, but they have increased since. MRI may be leading to more mastectomies, but we still don’t have data that MRI improves long-term outcomes. I’m Dr. Michael Hunter.

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Disclaimer: This blog is intended to provide you with accurate and timely medical news and information. It is not intended to give personal advice, which should be obtained directly from a physician or other valued health care professional. Acting on any information without first consulting a medical professional is solely at the reader’s risk. As for me, I am a Harvard- , Yale- and UPenn-educated radiation oncologist, and I practice in the Seattle, WA (USA) area. I feel genuinely privileged to be able to share with you. If you enjoyed today’s offering, please consider clicking the follow button at the bottom of this page.

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Harvard AB Yale MD UPenn Radiation Oncology Radiation Oncologist, Seattle area

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