Medical Oncologist
After surgery
Imaging the reconstructed or operated breast
After a mastectomy with reconstruction, routine mammograms of that side are usually stopped, because there is little breast tissue left to image. Follow-up there is by examination instead, with scans used when something is actually found. Your other breast is still screened as normal. This page explains what to expect, and what to report.
NG
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
- Do I still need mammograms after reconstruction?
- The vocabulary, in plain language
- What is used to check a reconstructed breast
- What follow-up looks like after each operation
- Lumps after reconstruction, and what they usually are
- What women are told after reconstruction
- Common questions about imaging after reconstruction
The short answer
Do I still need mammograms after reconstruction?
Usually not on the reconstructed side. Once the breast tissue has been removed, there is very little left to image, so routine mammograms of that side are generally not done. Follow-up there is by examination, with scans used only when there is something specific to check.
Why the rule changes after a mastectomy
A mammogram works by pressing breast tissue flat and looking through it. After the tissue is removed and replaced with an implant or with tissue moved from elsewhere in your body, there is no glandular tissue to compress and nothing useful for the picture to show. Doing the test anyway would be uncomfortable and would not answer the question.
The other breast is a different matter
If you still have your other breast, it continues to be screened in the usual way, every year or at whatever interval your team sets. This is the part women most often let slip, because they feel they have finished with all of it. It is the part that matters most.
After breast-conserving surgery it is different again
If your breast was reshaped rather than removed, most of the tissue is still there and yearly mammograms of that side continue. The first one after radiotherapy becomes your new baseline, because treated tissue looks different from how it looked before.
Ask your team to write down which sides are being imaged and how often. It is a genuinely confusing point.Words you will hear
The vocabulary, in plain language
- Implant reconstruction
- The breast shape rebuilt with a silicone or saline implant, usually behind or in front of the chest muscle.
- Flap reconstruction
- The breast rebuilt using skin, fat and sometimes muscle moved from your tummy, back or thigh. It is your own living tissue.
- Fat necrosis
- An area of transplanted fat that has lost its blood supply and formed a firm lump. Very common after flap surgery, and harmless, but it can feel exactly like a recurrence.
- Oil cyst
- A soft, fluid-filled area that can form after fat necrosis. Usually recognised confidently on ultrasound.
- Chest wall recurrence
- Cancer returning in the skin or tissue of the treated chest wall. It is usually found by examination or by you noticing it, not by a scan.
- Baseline mammogram
- The first picture after treatment finishes, kept for comparison with every one that follows.
Not sure whether this applies to you?
Ask an oncologistWhich test, and when
What is used to check a reconstructed breast
Different questions call for different tests, and the most important one is not a scan at all.
Examination, by you and your team
This is the main method of follow-up on the reconstructed side. Learn what your new breast normally feels like, because knowing your own baseline is what makes a change noticeable.
Worth reporting
- A new firm lump anywhere on the chest wall
- A change in the skin, or a new dimple
- Redness or a rash that does not settle
Ultrasound
The usual first test when something is felt. It is quick, painless and good at telling a fluid-filled area from a solid one, which settles many worries the same day.
A needle sample
If a solid lump remains unexplained, tissue is taken. Fat necrosis and recurrence can look and feel similar, so the needle is often the only honest way to separate them.
Being sampled is not a sign anyone expects bad news.MRI, occasionally
Used where the question cannot be settled otherwise, or where an implant rupture is suspected. It is not part of routine follow-up and should not be requested as a general check.
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Side by side
What follow-up looks like after each operation
Your operation
What routine follow-up involves
Lumpectomy, breast kept
Yearly mammogram of that breast, plus examination
Mastectomy, no reconstruction
Examination of the chest wall; no mammogram that side
Mastectomy with an implant
Examination; scans only if something is found
Mastectomy with a flap
Examination; ultrasound for any new firm lump
Any of the above, other breast still present
That breast is screened normally, and this must not lapse
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Being straight with you
Lumps after reconstruction, and what they usually are
Almost every woman who has had a flap reconstruction will feel something firm in it at some point. Most of those lumps are fat necrosis, which is transplanted fat that did not keep its blood supply. It is harmless. It is also indistinguishable from a recurrence by touch alone.
Why that matters practically
Because the reassuring answer and the serious one feel the same, every new lump gets checked. Women who have been told this in advance cope far better than those who discover it alone at home and spend a fortnight assuming the worst.
Where recurrence actually appears
When breast cancer comes back after a mastectomy, it usually appears in the skin or the tissue just under it, rather than deep inside the reconstruction. That is one reason examination is more useful here than imaging, and why changes in the skin are worth reporting promptly.
What this page cannot tell you
It cannot tell you what your lump is, and no page can. It also cannot set your schedule, because that depends on your operation, your stage and whether you still have the other breast. Ask your team for your own plan in writing, including who to telephone and how fast you can be seen.
Commonly believed
What women are told after reconstruction
No mammogram means I am not being followed up properly.
It means the test would not show anything useful, not that nobody is watching. Follow-up on that side is by examination, which is genuinely better suited to finding what actually recurs there. What would be a real gap is letting the other breast go unscreened.
Reconstruction hides a recurrence.
Cancer returning after a mastectomy usually appears in the skin or just beneath it, where it can be seen and felt. Studies have not found that reconstruction delays the detection of recurrence. It does produce harmless lumps that need checking, which is a different problem.
Every lump in a reconstruction is bad news.
Most are fat necrosis, particularly in the first year or two after flap surgery. They are firm, sometimes tender, and settle or stay unchanged. Get each one checked, but do not assume the worst while you wait for the appointment.
I can stop going once the reconstruction has healed.
Follow-up continues for years, and the yearly mammogram of your other breast continues indefinitely. Reconstruction is about the shape of the breast; it changes nothing about the surveillance your cancer needs.
Questions we are asked
Common questions about imaging after reconstruction
Can I have a mammogram with an implant reconstruction?
It is not done routinely, because almost all the breast tissue was removed and there is nothing useful to image. Occasionally one is arranged to answer a specific question. This is different from a woman with cosmetic implants and her own breast tissue, who is screened normally with extra views.
I can feel a hard lump in my flap. What should I do?
Report it and ask for an ultrasound. Most of these turn out to be fat necrosis, which is harmless transplanted fat that lost its blood supply. It cannot be told apart from a recurrence by touch, so it needs checking rather than watching. Do not wait for your next scheduled review.
How often should my other breast be screened?
Usually every year while you are under follow-up, then at whatever interval your team or the national programme sets. Make sure someone has actually booked it. This is the appointment that most often falls through the gap between hospital follow-up and routine screening.
Will an MRI check my implant is intact?
Yes, MRI is the most reliable way to see a rupture. It is arranged when there is a reason to suspect one, such as a change in shape or new pain, rather than as a routine check. Ask your surgeon what they advise for the type of implant you have.
Does radiotherapy change how my reconstruction looks on scans?
It does. Treated tissue becomes firmer and the appearance changes, which is why a baseline picture after treatment matters so much. Comparison against that baseline is what lets a radiologist tell an expected change from a new one.
Should I be doing self-examination?
Yes, and it matters more here than almost anywhere else, because examination is the main method of follow-up. Ask your breast care nurse to show you what your reconstruction normally feels like, including the scar and the armpit, so you have a baseline of your own.
What if my reconstruction was done years ago elsewhere?
Bring whatever records you have, including the operation notes and the type of implant if you know it. A new team can pick up your follow-up without repeating everything, but only if they know what was done. If you have no records, say so early.
Is a PET-CT a better way to check everything at once?
No, and it is not part of routine follow-up for early breast cancer. It finds harmless areas often enough that each one then needs investigating. It is used when there is a specific question, not as an annual sweep.
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Speak to a breast cancer specialist
Call the helpline or leave your details, and someone will help you arrange a consultation at the CION centre nearest you. One helpline serves every CION centre.
Call 1800 202 8726
Helpline open 24/7
Sources
- Cancer Research UK — Follow-up after breast cancer treatment
- National Cancer Institute — Breast reconstruction after mastectomy
- Breast Cancer Now — Breast reconstruction
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.