Cancer in One Breast: Should You Have a Single or Double Mastectomy?

When breast cancer is found in one breast, deciding what to do with the other breast can feel almost as complicated as choosing the cancer operation itself. For patients in Lone Tree, Colorado, our team at The Breast Center – Park Meadows Cosmetic Surgery can explain how different mastectomy options may affect reconstruction. Dr. Christopher G. Williams and Dr. Jeremy Z. Williams are board-certified plastic and reconstructive surgeons with Johns Hopkins training who work alongside each patient’s cancer care team when reconstruction is part of the plan.

What Does a Single vs. Double Mastectomy Mean?

A unilateral mastectomy removes the breast affected by cancer. A bilateral, or double, mastectomy removes both breasts. If the opposite breast does not contain cancer, removing it to reduce future risk is called a contralateral prophylactic mastectomy.

That choice is not automatically safer for every patient. The National Cancer Institute notes that removing the unaffected breast can lower the chance of developing cancer there, but evidence does not show a mortality benefit for most people with cancer in one breast who are not at high risk of developing cancer in the other.

What Factors Can Change the Decision?

Your diagnosis is only one part of the picture. Family history, age, overall health, prior radiation exposure, genetic testing, and your estimated risk of a second breast cancer can all influence the discussion.

For someone with an inherited cancer-related gene variant or another major risk factor, the conversation may look different. Our information for high-risk and BRCA-positive patients and our overview of prophylactic mastectomy can help you prepare for that discussion with your breast surgeon and oncology team.

How Can the Choice Affect Reconstruction?

Reconstructing one breast can involve different planning than reconstructing both. After a unilateral mastectomy, some patients also consider breast shaping surgery on the natural breast to improve balance. Your mastectomy technique also matters. For eligible patients, a nipple-sparing mastectomy may preserve more of the breast envelope for reconstruction.

Before making a decision, bring a few specific questions to your medical team:

• What is my estimated risk of cancer developing in the opposite breast?
• Should I consider genetic testing or genetic counseling?
• Would removing the other breast change my cancer treatment or recovery?
• How would unilateral versus bilateral surgery change my reconstruction choices?

There is no single answer that fits every diagnosis. The goal is to understand what each option does, what it does not do, and how it fits your cancer treatment and personal priorities.

Discuss Your Reconstruction Options in Lone Tree

If you are weighing mastectomy choices and want to understand the reconstructive side of the decision, contact us at The Breast Center – Park Meadows Cosmetic Surgery. Call 303-706-1100 to meet with our Lone Tree team and discuss how your surgical plan may shape your reconstruction options.