A nipple-sparing mastectomy is a mastectomy that removes all the breast tissue but preserves both the breast skin envelope and the nipple-areolar complex, allowing immediate reconstruction with the most natural-looking cosmetic outcome.
NSM is the most cosmetically favourable form of mastectomy when patient anatomy and the cancer’s position allow it. It is most commonly used for risk-reducing mastectomy (where there is no cancer in the breast) and for selected cancer cases where the tumour is well away from the nipple.
Orientation Why you might be reading about this
You may be considering mastectomy and want to understand whether nipple-sparing technique is an option for you. The cosmetic difference between nipple-sparing and skin-sparing mastectomy is meaningful, and the eligibility criteria are specific. This page explains who NSM is suitable for and what trade-offs are involved.
Related terms: Mastectomy · Skin-sparing mastectomy · Risk-reducing mastectomy · Implant reconstruction · DIEP flap
How it differs How NSM differs from other mastectomy types
The key difference is what is removed versus what is preserved:
| Simple mastectomy | Skin-sparing mastectomy | Nipple-sparing mastectomy | |
|---|---|---|---|
| Breast tissue removed | Yes | Yes | Yes |
| Skin envelope preserved | No | Yes | Yes |
| Nipple-areolar complex preserved | No | No | Yes |
| Suitable for immediate reconstruction | Possible but harder | Yes | Yes — best cosmetic result |
The cosmetic outcome with nipple-sparing technique plus immediate reconstruction is usually the closest a mastectomy result gets to a natural breast — both the skin envelope and the nipple are preserved on the patient’s own tissue.
Suitability When NSM is suitable
Eligibility depends on three factors:
1. The cancer (where one exists)
For cancer surgery, NSM is suitable when4:
- The cancer is not close to the nipple — typically more than 2 cm away on imaging.
- There are no signs of nipple involvement clinically (Paget’s disease, nipple discharge from the cancer, retraction).
- The cancer can be safely cleared with the planned operation while preserving the nipple.
For risk-reducing mastectomy, where there is no cancer, NSM is the default approach where anatomy allows.
2. The breast anatomy
NSM works best in:
- Smaller-to-moderate breast size — very large breasts can compromise blood supply to the preserved nipple.
- Breasts that are not very ptotic (drooping) — significant ptosis makes nipple preservation harder, though it is still sometimes possible with technique adjustments.
- Patients without significant prior surgery that may have disrupted the blood supply to the nipple.
3. The patient
- Non-smoker (or able to stop for several weeks around the surgery) — smoking significantly increases the risk of nipple loss from compromised blood supply4.
- Body mass index within a reasonable range — very high BMI is associated with higher complication rates4.
Where any of these factors makes nipple preservation unsafe, skin-sparing mastectomy is the alternative — preserving the skin envelope but removing the nipple1. Nipple reconstruction can be offered later as a smaller day-case procedure.
The procedure What the operation involves
- Anaesthetic: general anaesthetic.
- Incision: usually placed in the inframammary fold (under the breast), the lateral chest, or around part of the areolar edge. The incision is hidden as much as possible.
- Length of operation: depends on the reconstruction. NSM with implant-based reconstruction typically takes 2–3 hours per side2; with DIEP, 6–8 hours.
- Hospital stay: 1–2 nights for implant-based reconstruction; 4–5 nights for DIEP.
- Reconstruction: almost always immediate — the preserved skin envelope is filled with an implant or autologous tissue at the same operation.
For more on the practice’s pathway, see mastectomy and risk-reducing mastectomy.
Outcomes Outcomes and trade-offs
What is preserved
- The skin envelope — including the natural breast contour after reconstruction.
- The nipple and areola — preserved on their own blood supply, so they remain alive and (often) sensate.
- Cosmetic result — usually the closest to the original breast.
What is altered
- Nipple sensation — usually reduced, sometimes absent. Some sensation may return over months.
- Nipple appearance — the nipple may sit slightly differently after reconstruction; revision can sometimes refine this at a later operation.
- Risk of nipple loss — a small percentage of preserved nipples lose their blood supply and must be removed at a later operation. The risk is higher in smokers, in very large breasts, and in patients having radiotherapy after surgery4.
Cancer-specific considerations
For cancer cases, the small theoretical concern is that residual breast tissue might remain behind the preserved nipple. In practice, with careful surgical technique, recurrence rates after NSM for cancer are similar to those after skin-sparing mastectomy in patients selected appropriately3. NSM is not recommended where the cancer is close to the nipple4.
At consultation What to discuss at consultation
If NSM is being considered:
- Whether your specific anatomy and cancer (if applicable) make NSM suitable — not every patient is a candidate.
- The reconstruction options — implant-based or autologous, immediate.
- The realistic cosmetic outcome — usually shown at consultation with photographs of a range of results.
- The risk of nipple loss — small but real, particularly relevant if you smoke or have other risk factors.
- Sensation — what to expect.
Resources Further reading
- NHS — Breast cancer: Treatment — patient overview covering NSM and other types.
- Breast Cancer Now — Surgery for primary breast cancer — patient-focused guide.
- Breastory: Mastectomy service page · Risk-reducing mastectomy · Glossary: skin-sparing mastectomy · Reconstruction overview