Medical Oncologist
Metastatic breast cancer
Chest wall and local recurrence after mastectomy
Breast cancer can return in the chest wall skin, tissue or nearby nodes after mastectomy, often as a small lump or skin change near the scar. Any new change should be checked. When recurrence is limited to the chest wall, it can often be treated with the aim of long-term control.
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Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed September 2026, next review due September 2027
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On this page
- What is chest wall recurrence after mastectomy?
- Changes on the chest wall worth checking
- How chest wall recurrence is treated, in general terms
- The vocabulary, in plain language
- Honest expectations after chest wall recurrence
- Recurrence after breast reconstruction
- Checking your chest wall after mastectomy
- What happens after you report a change
- Coping with the news of a recurrence
- What people assume about chest wall recurrence
- Common questions about chest wall recurrence
The short answer
What is chest wall recurrence after mastectomy?
Chest wall recurrence is breast cancer that comes back in the skin, tissue or muscle of the chest on the side where a mastectomy was done, or in nearby lymph nodes. It can happen months or many years after surgery. It often appears as a small painless lump or nodule in or near the mastectomy scar, a patch of red or thickened skin, a rash that does not heal, or swelling in the armpit or above the collarbone. Because these changes can look like harmless scar tissue, stitches, fat necrosis or skin conditions, any new lump or skin change on the chest wall should be checked. When cancer returns only in the chest wall, without spread elsewhere, it can often be treated with the aim of long-term control using surgery, radiation and whole-body treatment.
How it is investigated
A biopsy confirms whether the change is cancer and rechecks hormone receptor and HER2 status. Scans look for any spread elsewhere in the body, which changes the treatment plan.
Local or distant recurrence
Recurrence limited to the chest wall and nearby nodes is called locoregional. If cancer is found in distant organs as well, it is treated as metastatic breast cancer.
When to seek help
Report any new lump, skin change, persistent rash or swelling on the chest wall, armpit or neck promptly.
This page gives general information only. Your care team will examine any changes you notice.Signs
Changes on the chest wall worth checking
Many are harmless, but a biopsy is the only way to be sure.
A lump or nodule
A small, firm, often painless lump in or near the scar.
Skin changes
Red, thickened or dimpled skin, or a patch that looks like a rash.
Especially if it does not settle.Nodes in the armpit or neck
New swelling in the armpit, above the collarbone or in the neck.
A sore that does not heal
An area of broken skin or ulceration on the chest wall.
Common harmless causes
- Scar tissue or stitch reactions
- Fat necrosis
- Skin infections or cysts
Not sure whether this applies to you?
Ask an oncologistTreatment
How chest wall recurrence is treated, in general terms
Treatment
Role
Surgery
Removes the recurrence with clear margins when possible
Radiation
Treats the chest wall if not previously irradiated, or selectively re-irradiates
Hormone therapy
For hormone-sensitive recurrences
HER2-targeted treatment
For HER2-positive recurrences
Chemotherapy
Sometimes added, especially for higher-risk recurrences
Words you will hear
The vocabulary, in plain language
- Chest wall recurrence
- Breast cancer returning in the chest wall after mastectomy.
- Locoregional recurrence
- Cancer returning in the chest wall or nearby lymph nodes only.
- Distant recurrence
- Cancer returning in organs such as bone, liver or lungs.
- Punch biopsy
- A small skin sample taken to check for cancer.
- Re-irradiation
- Giving radiation again to an area that was treated before.
- Fat necrosis
- A harmless firm lump from damaged fatty tissue.
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Being straight with you
Honest expectations after chest wall recurrence
A recurrence is distressing news after completing treatment. The outlook depends a great deal on whether the cancer has come back only in the chest wall or has also spread elsewhere, how long it has been since the original treatment, and the cancer's receptors.
Isolated recurrence can often be controlled
When recurrence is limited to the chest wall and can be removed, treatment is often given with the intention of long-term control, and many people remain well for years.
Recurrence carries a higher risk of later spread
Because chest wall recurrence can be a sign that cancer cells have survived treatment, whole-body treatment is often added and follow-up is closer.
Previous radiation affects options
If the chest wall was already treated with radiation, repeat radiation needs careful planning, and surgery may play a larger role.
What this page cannot tell you
It cannot predict your outcome. Ask your oncologist how the recurrence affects your plan and outlook.
Talk to our team
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After reconstruction
Recurrence after breast reconstruction
Chest wall recurrence can also occur after reconstruction, and it is usually found in the skin or tissue in front of the implant or flap.
How it usually shows
A lump or skin change on the reconstructed breast, often felt or seen near the skin surface rather than deep in the chest.
Does reconstruction hide recurrence?
Studies suggest reconstruction does not generally delay the detection of local recurrence, because most recurrences occur in the skin and tissue under the skin.
Treatment options
Treatment follows the same principles, sometimes with changes to the reconstruction if surgery or radiation is needed.
Keep checking the area
Get to know how your reconstructed breast normally looks and feels, and report any new changes.
Follow-up
Checking your chest wall after mastectomy
Regular self-checks and clinical reviews help find changes early.
Self-checks
Look at and gently feel the scar, chest wall, armpit and area above the collarbone once a month, so you notice what is new.
Clinic reviews
Your team examines the chest wall and nodes at follow-up visits.
Imaging
Routine mammograms are not done on the mastectomy side, but imaging of the other breast continues, and scans are arranged if changes appear.
Reporting promptly
Do not wait for your next appointment if you notice something new.
Tests
What happens after you report a change
When you notice a new lump or skin change on the chest wall, your team follows a clear set of steps to find out what it is and plan the next move.
Examination
A doctor looks at and feels the scar, chest wall, armpit, collarbone area and neck, and asks when the change appeared and whether it has grown.
Ultrasound
An ultrasound scan shows whether a lump is solid or filled with fluid and guides a needle biopsy to the right spot.
Biopsy
A needle or small skin sample is taken under local anaesthetic. The laboratory checks for cancer and, if found, tests the hormone receptors and HER2 again, because these can change from the original cancer.
Staging scans
If cancer is confirmed, scans of the chest, abdomen and bones, or a whole-body scan, look for spread elsewhere before treatment is chosen.
Coping
Coping with the news of a recurrence
Many people describe a recurrence as harder than the first diagnosis, because they had hoped treatment was behind them. Shock, anger, guilt and fear are all common and understandable reactions.
It is not your fault
Recurrence happens because some cancer cells survived earlier treatment. It is not caused by something you did or did not do.
Take one step at a time
Focus first on the tests and the treatment plan. Ask your team to explain each stage, and bring someone with you to appointments.
Get support
Counsellors, support groups and people who have been through a recurrence can help you and your family talk openly and feel less alone.
Commonly believed
What people assume about chest wall recurrence
After mastectomy, cancer cannot come back on that side.
A small amount of tissue remains, so recurrence on the chest wall is possible.
Every lump in the scar is cancer.
Many are harmless scar tissue or fat necrosis, but a biopsy is the only way to be sure.
Recurrence always means the cancer has spread everywhere.
Recurrence can be limited to the chest wall and treated with the aim of long-term control.
A skin rash on the chest is always an infection.
A rash that does not heal should be checked.
Questions we are asked
Common questions about chest wall recurrence
How common is chest wall recurrence after mastectomy?
It is uncommon, and the risk is lower after radiation when it was recommended. Your team can explain your own risk.
How soon can it happen?
Most occur within the first few years, but it can happen much later.
Is a biopsy painful?
Local anaesthetic is used, and most people feel little discomfort.
Can I have radiation again?
Sometimes, with careful planning, depending on previous dose and time elapsed.
Will I need scans of my whole body?
Usually yes, to check for spread elsewhere before treatment.
Does recurrence affect my reconstruction?
It may, if surgery or radiation to the area is needed.
Can I get a second opinion?
Yes. Bring your original and new pathology reports.
Who should I contact about a new lump?
Your breast care team, promptly.
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Speak to a breast cancer specialist
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Sources
- National Cancer Institute — Breast cancer treatment (PDQ): recurrent breast cancer
- Breast Cancer Now — Local recurrence of breast cancer
- European Society for Medical Oncology — Early breast cancer clinical practice guideline
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.