Risk-Reducing Mastectomy

Risk-reducing mastectomy removes most breast tissue to lower the chance of breast cancer in people with a high inherited risk.

Risk-reducing mastectomy, also called preventive or prophylactic mastectomy, removes most breast tissue before cancer is diagnosed. It may be considered when inherited risk is high, including in some people with a BRCA gene mutation. The operation can be bilateral, involving both breasts, and may include immediate or delayed reconstruction. It reduces risk but cannot remove every breast cell, so follow-up remains part of care.

Planning starts with genetic counselling, breast assessment, and a conversation about skin-sparing or nipple-sparing approaches, reconstruction, and personal priorities. A surgeon removes breast tissue through an incision; a plastic surgeon may place an implant or use tissue from another body area to rebuild the breast shape. The team also discusses whether the nipples can be preserved and whether removal of nearby lymph nodes is needed for another reason.

Expected effects include pain, swelling, bruising, numbness, tightness, scars, and changes in breast shape or sensation. Reconstruction can add wound-healing problems, infection, fluid collection, implant movement, or the need for another operation. Contact the surgical team promptly for fever, spreading redness, worsening drainage, sudden swelling, chest pain, or difficulty breathing; these can signal a complication needing urgent assessment.

The procedure substantially lowers the chance that breast tissue will develop cancer in people selected because their inherited risk is high, but it does not make the chance zero. Outcomes also include body image, sexual wellbeing, sensation, reconstruction satisfaction, and emotional adjustment. A breast specialist and genetics team can explain how the expected benefit fits your mutation, family history, age, and screening options.

The decision is preventive rather than a treatment for an existing breast tumour. Genetic counselling helps clarify whether testing and surgery are appropriate. Some people choose enhanced surveillance instead, while others combine surgery with reconstruction or staged procedures.

It may be discussed with people whose genetic result, family pattern, or specialist risk assessment indicates a markedly elevated breast cancer risk. A BRCA gene mutation is one example. The choice is personal; having a mutation does not by itself mean surgery is required. Ask about BRCA Genetic Testing when the result would change screening or prevention choices.

Before surgery, the team confirms the plan, reviews medicines and medical conditions, and arranges imaging when needed. During surgery, breast tissue is removed and drains may be placed. Reconstruction may happen during the same operation or later. Afterward, nurses monitor pain, wounds, drains, movement, and readiness for discharge.

Early recovery includes wound care, drain management, and gentle arm movement. Tiredness and altered sensation may last beyond the first few weeks. Activity is increased gradually, with lifting and strenuous exercise restricted until the surgeon confirms healing. Reconstruction can make recovery longer or involve more than one procedure. Keep scheduled reviews so the team can assess healing and address changes in comfort or appearance.

Risks vary with the operation, reconstruction method, and general health. They include bleeding, infection, delayed healing, anaesthetic problems, blood clots, persistent pain, altered sensation, and dissatisfaction with appearance. Smoking, diabetes, and some medicines can affect healing, so share your full medical history and medication list before surgery.

Alternatives may include intensive imaging and clinical surveillance, medicines in selected situations, or delaying a decision while gathering information. Breast MRI can be part of enhanced surveillance for people at elevated risk. Ask how each option changes screening, future procedures, peace of mind, and the possibility of finding cancer early.

Look for a breast surgeon who works with a genetics professional, radiologist, oncologist when needed, and reconstructive plastic surgeon. At a consultation, ask how risk was estimated, which tissues would be removed, what reconstruction pathways are available, how complications are handled, and who will coordinate follow-up.