Radiation therapy and breast reconstruction are closely linked, because radiation can sometimes cause healing problems in reconstructed breasts.
Whether you will need radiation is one of the main factors in deciding when, and how, reconstruction is done.
This page explains the usual reasoning in general terms. The wider recovery picture is in the hub on life after breast cancer surgery.
| Topic | What the sources say |
|---|---|
| Radiation and healing | Radiation can sometimes cause wound healing problems or infections in reconstructed breasts. |
| Implants and radiation | Immediate implant reconstruction is usually still an option if radiation is needed. |
| Own-tissue reconstruction | It is usually reserved for after radiation therapy. |
| Immediate reconstruction | May not be offered if chemotherapy and radiation therapy are still needed. |
| Delayed reconstruction timing | It may be done 6 to 12 months after mastectomy or breast-conserving surgery. |
These points come from the National Cancer Institute and the Canadian Cancer Society. Information can change, so check the source for the latest.
Why radiation affects reconstruction planning
The National Cancer Institute names radiation as one factor that can affect the timing of reconstruction. It states that radiation therapy can sometimes cause wound healing problems or infections in reconstructed breasts, so some women may prefer to delay reconstruction until after radiation therapy is completed.
The American Cancer Society describes a related mechanism. It says that radiation to the chest area can reduce blood flow to the skin and tissue, which may increase the risk of wound problems. For someone who has had radiation, the surgeon may recommend lowering this risk by delaying reconstruction or by using a specific type of reconstruction.
The Canadian Cancer Society lists radiation therapy, past or planned, among the things surgeons consider when they decide which types of reconstruction to offer. Other items on that list include overall health, the health of the tissue where reconstruction will be done, and chemotherapy.
Timing: immediate, delayed or in between
The Canadian Cancer Society explains that immediate reconstruction is done at the same time as surgery to remove part or all of the breast, while delayed reconstruction is a separate surgery done after other cancer treatments, including chemotherapy and radiation therapy, are finished. It adds that a person may not be offered immediate reconstruction if chemotherapy and radiation therapy are still needed, because those treatments could damage the reconstructed breast and raise the risk of complications such as problems healing and infections.
If delayed reconstruction is recommended, the same page says it may be done 6 to 12 months after a mastectomy or breast-conserving surgery, and it can also be done years after treatment.
The National Cancer Institute notes that even a person who is a candidate for immediate reconstruction may choose delayed reconstruction, for instance because they prefer not to think about the type of reconstruction until after recovery from the mastectomy and further treatment. Those who delay or decline reconstruction can use external breast prostheses, also called breast forms.
Why immediate reconstruction is still discussed
Radiation is not the only consideration, and immediate reconstruction has its own advantages. The same PMC review says immediate breast reconstruction is advantageously associated with a reduced recovery time, a better aesthetic outcome, an improved quality of life and lower surgery- and recovery-related costs. That is one reason surgeons and patients weigh the possibility of radiation against these benefits rather than treating radiation as an automatic reason to wait.
The American Cancer Society adds that chemotherapy, radiation and other treatments given before reconstruction can affect how well a person heals.
Implants and radiation
The National Cancer Institute says 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.
A review in the National Library of Medicine’s PMC archive describes an approach sometimes used in this situation. After skin-sparing mastectomy, tissue expanders can serve as spacers so the skin pocket is not lost, which the authors call particularly helpful for patients who are sure to receive radiotherapy to the skin or chest wall. The same review cautions that unforeseen radiotherapy may compromise the final result, for example through capsular contracture in implant-based reconstruction.
The review also refers to an even worse outcome in implant-based reconstruction with irradiated skin. These are statements from a published review written for clinicians, and the surgical team can explain what they mean for a particular person.
Using the body’s own tissue
For reconstruction with the body’s own tissue, timing is often different. The National Cancer Institute states that autologous tissue breast reconstruction is usually reserved for after radiation therapy, so that the breast and chest wall tissue damaged by radiation can be replaced with healthy tissue from elsewhere in the body.
It also reports that postoperative radiotherapy will not significantly increase the rate of flap-related complications, while noting that it is not yet known to what extent a flap will harden and shrink at long-term follow-up. Because findings differ, it is reasonable for a person to ask the care team how the evidence applies to the planned technique.
Questions worth bringing to appointments
Because every treatment plan is different, it helps to prepare questions before meeting the surgeon and the radiation team. Useful topics include whether radiation is expected, how that could change the timing of reconstruction, which techniques are usually considered in that situation, and what the plan would be if the treatment plan changes after surgery.
It can also help to ask how skin and tissue are checked during and after radiation, what warning signs should prompt a call, and how long the care team expects to follow the reconstructed breast. Writing the answers down makes it easier to compare options later and to share them with family members who are helping with decisions.
Related effects to ask about
Radiation can affect more than the reconstructed breast. The National Cancer Institute says that radiation therapy causes scar tissue that can block the flow of lymph fluid, which is one route to lymphedema, covered in the guide to lymphedema after breast surgery. Skin changes and how scars heal are covered in the guide to scar care after breast surgery.
The PMC review also notes that radiotherapy after breast-conserving surgery may result in some tissue shrinkage. Anyone preparing for radiation and reconstruction can use appointments to ask how the planned radiation might affect the result and what the follow-up plan is.
Decisions about radiation, surgery and timing belong with the reader’s own surgeon, radiation oncologist and care team, who know the stage of the cancer and the planned treatment. The information on this page is general and cannot say what is right for an individual.
Frequently asked questions
Can reconstruction be done before radiation?
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Sometimes. Cancer information from the National Cancer Institute says an implant is usually still an option for people who will need radiation, while the Canadian Cancer Society notes that immediate reconstruction may not be offered when radiation is still needed.
Why is body-tissue reconstruction often left until after radiation?
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The aim is to replace tissue that radiation has damaged with healthy tissue taken from elsewhere in the body.
Does radiation always cause problems for reconstruction?
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No. It can sometimes lead to healing problems or infection, and the likelihood depends on the person and the technique, so the surgical team assesses each case.
Who decides the order of treatment?
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The surgeon and wider care team, based on the treatment plan and the person’s preferences.
