A mastectomy is surgery to remove all breast tissue from a breast. It is most commonly performed to treat breast cancer, though it can also be done preventively for people at very high risk of developing it. Understanding what the surgery involves, what the different types look like, and what recovery feels like can help you know what to expect if you or someone close to you is facing this procedure.
Why a Mastectomy Is Recommended
A mastectomy may be recommended when breast-conserving surgery (a lumpectomy) isn’t a good option. The most common reasons include having cancer in multiple areas of the breast, a tumor that’s large relative to the breast size, or cancer that has come back after previous treatment. Some people choose mastectomy over lumpectomy to avoid the radiation therapy that typically follows breast-conserving surgery.
The procedure is also used to treat ductal carcinoma in situ (DCIS, a noninvasive form of breast cancer), early-stage breast cancers (stages 1 and 2), and Paget’s disease of the breast. For more advanced cancers, like stage 3 or inflammatory breast cancer, chemotherapy usually comes first, with mastectomy following.
Preventive (prophylactic) mastectomy is an option for people with a very high genetic risk, such as carriers of BRCA gene mutations. Evidence shows that bilateral prophylactic mastectomy reduces breast cancer incidence by 85% to 100%. It is also sometimes performed as part of gender-affirming care.
Types of Mastectomy
Not all mastectomies are the same. The type you have depends on the size, location, and stage of the cancer, plus whether you plan to have reconstruction afterward.
- Total (simple) mastectomy: Removes the entire breast, including the breast tissue, nipple, areola, and most of the overlying skin. This is the most common type.
- Modified radical mastectomy: Combines a total mastectomy with removal of the lymph nodes under the arm. This is typically needed when cancer has spread to nearby lymph nodes or is locally advanced.
- Skin-sparing mastectomy: Removes all the tissue inside the breast but preserves most of the outer skin. That skin then serves as an envelope to cover a reconstructed breast, making it the preferred approach for people planning immediate reconstruction.
- Nipple-sparing mastectomy: Goes a step further by also preserving the nipple and areola. This is possible when the cancer is not close to the nipple.
- Radical mastectomy: Removes the breast, underarm lymph nodes, and the chest wall muscles beneath the breast. This was once the standard operation but is now rarely performed, replaced by less extensive techniques that achieve similar survival outcomes.
What Recovery Looks Like
After surgery, you’ll have one or more small drainage tubes coming from the surgical site. These collect fluid that builds up as your body heals. The average drain stays in place for two to three weeks, though removal isn’t based on a calendar. Once the fluid output drops below about 20 to 30 milliliters per day for two consecutive days, the drain can typically come out.
During the time you have drains, you’ll need to avoid heavy lifting and shouldn’t raise the arm on the surgical side above your head, as this can dislodge a drain or spacer. Specialty mastectomy bras are designed with clips to pin drains in place, which many people find more comfortable than managing them on their own.
Most people go home the same day or within one to two days after surgery, depending on the extent of the procedure and whether reconstruction was done at the same time. The first few weeks involve limited arm movement and gradual increases in activity. Full recovery from a mastectomy alone (without reconstruction) generally takes three to six weeks, though this varies.
Reconstruction vs. Flat Closure
If you’re having a mastectomy, one of the biggest decisions is what happens to your chest afterward. The two main paths are breast reconstruction or aesthetic flat closure.
Breast Reconstruction
Reconstruction can be done at the same time as the mastectomy (immediate) or months to years later (delayed). Both approaches use either implants or tissue transferred from another part of your body, such as the abdomen or back. Immediate reconstruction tends to produce better cosmetic results and has psychological benefits, but it carries a higher risk of surgical complications compared to waiting. Fewer than 20% of mastectomy patients nationwide have immediate reconstruction, often because radiation treatment, which can negatively affect reconstruction outcomes, is still needed after surgery.
Aesthetic Flat Closure
Some people choose not to reconstruct at all. In a flat closure, the surgeon removes the breast tissue and closes the chest wall smoothly. The top reason people choose this route is faster recovery. About 35% cite lower complication rates as a motivating factor, and roughly 40% say they want to avoid having a foreign body (an implant) placed in their chest. In surveys, about 90% of flat closure patients report being satisfied with their decision.
Chronic Pain After Mastectomy
One of the less-discussed consequences of mastectomy is post-mastectomy pain syndrome, a chronic pain condition that develops in the chest wall, armpit, or arm on the surgical side. Estimates of how common it is vary widely, from about 20% to as high as 68% of people who have had the surgery. Most large studies place the number somewhere between 25% and 45%. The pain is often described as a dull ache, though it can also feel like burning, stabbing, or tingling.
Numbness in the chest wall is nearly universal after mastectomy because the surgery cuts through nerves in the breast tissue. Some sensation may return over months or years, but permanent changes in feeling are common. These sensory changes are distinct from post-mastectomy pain syndrome, though the two can overlap.
Lymphedema Risk
Lymphedema, a chronic swelling in the arm caused by disrupted lymph drainage, is a potential long-term complication when lymph nodes under the arm are removed. The generally accepted incidence is around 20%, though reported rates range from 6% to 30% depending on the study and the extent of surgery.
Several factors increase the risk significantly. Obesity (BMI of 25 or higher) nearly quadruples the odds. Radiation therapy after surgery roughly doubles the risk. A post-surgical wound infection triples it. The risk is also higher in people with more advanced cancer (stage 3 vs. stages 1 or 2) and in those who undergo more extensive lymph node removal. Radical mastectomy carries a statistically higher lymphedema risk than modified radical mastectomy or breast-conserving surgery.
Lymphedema can develop weeks, months, or even years after surgery. It isn’t curable, but it is manageable with compression garments, specialized physical therapy, and exercise. Recognizing early signs like a feeling of heaviness or tightness in the arm allows for earlier intervention, which leads to better outcomes.