The choice of immediate vs delayed breast reconstruction is a question of timing: surgery to rebuild the breast can be done or started at the time of the mastectomy, or later.
Choosing what to do after breast cancer surgery is very personal.
This page is one part of the wider guide to breast reconstruction on this independent information site. It is general information only, and decisions about surgery, timing and recovery belong with each reader’s own surgeon and care team.
| Item | What to know |
|---|---|
| Immediate reconstruction | Done or started at the time of the mastectomy |
| Delayed reconstruction | Done after incisions have healed and treatment is completed |
| How long a delay can last | Delayed reconstruction can happen months or even years after mastectomy |
| Implant after a tissue expander | Chest tissue is usually ready 2 to 6 months after expander placed |
| Radiation and implants | Immediate implant reconstruction is usually still an option with radiation |
| Is reconstruction required? | Reconstruction or wearing a prosthesis is not medically necessary |
These rows come from the National Cancer Institute and the Canadian Cancer Society. Information can change, so check the sources for the latest.
Immediate and delayed reconstruction defined
According to the National Cancer Institute, surgery to reconstruct the breast can be done, or started, at the time of the mastectomy. That approach is called immediate reconstruction. The same source describes delayed reconstruction as surgery done after the mastectomy incisions have healed and treatment has been completed.
Delayed reconstruction does not follow a fixed schedule. The National Cancer Institute notes that it can happen months or even years after the mastectomy, which means the gap can be short or long depending on the individual situation.
Reconstruction is also a choice rather than a requirement. The Canadian Cancer Society explains that choosing what to do after surgery for breast cancer is very personal, and that having breast reconstruction or wearing a breast prosthesis is not medically necessary.
Immediate reconstruction in practice
With the immediate approach, rebuilding begins during the same operation as the mastectomy. As the National Cancer Institute puts it, reconstruction can be done or started at that time, so the work may be completed in that operation or continue in further stages afterwards.
For implant-based reconstruction, the National Cancer Institute explains that implants are usually placed as part of a two-stage procedure. In the first stage a device called a tissue expander is placed under the skin left after the mastectomy or under the chest muscle, and it is slowly filled during periodic visits after surgery. The chest tissue is usually ready for the implant 2 to 6 months after the expander is placed. A separate page on the tissue expander describes how gradual expansion prepares the chest.
Immediate reconstruction can also connect to the type of mastectomy. The Canadian Cancer Society describes a skin-sparing mastectomy as an option for people who plan to have breast reconstruction at the same time as the surgery and whose reconstruction can be done with very little scarring. That link between operation type and timing is one reason the conversation about reconstruction often starts before the mastectomy takes place.
Delayed reconstruction in practice
Delayed reconstruction starts after the mastectomy site has healed and cancer treatment has finished.
Those who delay, or who choose not to undergo reconstruction at all, can use external breast prostheses, also called breast forms, to give the appearance of a breast. The Canadian Cancer Society describes a breast prosthesis as an artificial breast form worn inside a bra to create the natural shape of a breast.
Tissue from the person’s own body can also be used. The National Cancer Institute explains that flaps most often come from the abdomen or back, and with a pedicled flap the tissue and its attached blood vessels are moved together through the body to the breast area. Back tissue is one source, covered in a page on the latissimus dorsi flap, and abdominal tissue is another.
Radiation therapy and timing
Whether radiation therapy will be needed is one of the main factors the National Cancer Institute lists for the timing of reconstruction.
The picture is not one-directional. The same source notes that, because of improvements in surgical and radiation techniques, immediate reconstruction with an implant is usually still an option for women who will need radiation therapy. By contrast, autologous tissue reconstruction, which uses the person’s own tissue, is usually reserved for after radiation therapy, so that breast and chest wall tissue damaged by radiation can be replaced with healthy tissue from elsewhere in the body.
These details are specific to each person’s diagnosis and treatment plan. For that reason, the question of radiation is one that people raise with their surgical and cancer care teams when timing is being considered.
Points people commonly weigh
The two approaches differ in practical ways. The table below summarises the main differences described in the sources cited on this page.
| Question | Immediate reconstruction | Delayed reconstruction |
|---|---|---|
| When does it start? | At the time of the mastectomy | After incisions have healed and treatment is complete |
| Radiation therapy | An implant is usually still an option for women who will need radiation | Allows radiation to be completed first; own-tissue reconstruction is usually reserved for this point |
| Decision pace | Choices about reconstruction are made before or around the mastectomy | Time to recover before deciding what type to have |
The table summarises information from the National Cancer Institute reconstruction fact sheet.
Other considerations come up in these conversations as well. The National Cancer Institute notes that any type of breast reconstruction can fail if healing does not occur properly, in which case the implant or flap will have to be removed. It also notes that obesity, diabetes and smoking may increase the rate of complications with implants. The sources describe these as general considerations for reconstruction, and how they apply to any one person is a matter for that person’s own care team.
Preparing for an appointment
Reading about the options is only a starting point, and a consultation lets the surgeon explain what is possible for the person’s own anatomy and treatment. The Canadian Cancer Society suggests talking with the healthcare team, family, friends and people who have gone through the same experience about the options available after breast cancer surgery. Based on that information, each person can decide what is best for them.
Frequently asked questions
What is the difference between immediate and delayed breast reconstruction?
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Immediate reconstruction is done, or started, at the time of the mastectomy. Delayed reconstruction is done after the mastectomy incisions have healed and treatment is complete, and it can happen months or even years later.
Can someone who is a candidate for immediate reconstruction still choose to delay it?
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Yes. The National Cancer Institute notes that even a woman who is a candidate for immediate reconstruction may choose delayed reconstruction, for example because she prefers to recover from the mastectomy and further treatment before thinking about reconstruction.
Does radiation therapy rule out immediate reconstruction?
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Not necessarily. The National Cancer Institute states that immediate reconstruction with an implant is usually still an option for women who will need radiation therapy, although some women prefer to delay until radiation is completed.
Is breast reconstruction required after a mastectomy?
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No. The Canadian Cancer Society states that having breast reconstruction or wearing a breast prosthesis is not medically necessary, and some people choose to remain flat.
