How soon after a lumpectomy is the first mammogram?

The American Cancer Society says most experts recommend a mammogram of the treated breast 6 to 12 months after treatment ends. After that, mammograms of the treated breast are typically done at least once a year.

Can a mammogram even be done on a reconstructed breast?

Yes, it is technically possible, and it is sometimes used as a diagnostic test when there is a lump or other concern. It is not routine screening. The American College of Radiology rates screening mammography as usually not appropriate after implant reconstruction and as may be appropriate after flap reconstruction.

Is breast cancer still possible after a double mastectomy?

Yes, although the risk is much lower. The National Cancer Institute reports that bilateral risk-reducing mastectomy lowers risk by at least 95% in women with a harmful BRCA1 or BRCA2 variant. Surgery cannot remove every bit of breast tissue, so a small risk remains.

Should I get a yearly breast MRI or ultrasound of my mastectomy side instead?

Not as routine screening. The American College of Radiology rates screening ultrasound and MRI of a mastectomy side as usually not appropriate, with or without reconstruction. These tests are used when you or your doctor find a lump or another change.

How is recurrence found on the mastectomy side without mammograms?

Mainly through regular physical exams and your own awareness of changes. The ACS and ASCO survivorship guideline recommends regular surveillance with a history and physical exam. Report any new lump, skin change, or pain on the chest wall, scar, or underarm without waiting for your next visit.

Do I Still Need Mammograms After a Mastectomy?

The short answer: It depends on what was removed. After a mastectomy on one side, you still need a yearly mammogram of the other breast, but not of the mastectomy side. After a double mastectomy, routine mammograms usually stop. After a lumpectomy, which is not a mastectomy, yearly mammograms of the treated breast continue.

Does the mastectomy side still need mammograms?

Usually not. A mammogram images breast tissue, and a mastectomy removes nearly all of it. The American Cancer Society says people who had a simple, modified radical, or radical mastectomy "should not need further routine screening mammograms on that side."

Surgeons and radiologists agree. The American Society of Breast Surgeons 2026 position statement states that screening imaging after mastectomy, with or without reconstruction, is not recommended. The American College of Radiology Appropriateness Criteria rate screening mammography, 3D mammography, ultrasound, and MRI of a mastectomy side without reconstruction as "usually not appropriate."

That does not mean follow-up ends. A joint American Cancer Society and American Society of Clinical Oncology survivorship guideline says survivors should have regular surveillance with a cancer-related history and physical exam. The same guideline found that data do not support routine imaging tests in people without symptoms to look for recurrence. Your care team checks the chest wall, the scar, and the nearby lymph node areas by hand at each visit.

Do I still need a mammogram of the other breast?

Yes. This is the part people most often miss. If you had one breast removed, the remaining breast still needs screening every year.

The American Cancer Society says people who had a mastectomy "will still need regular mammograms on the remaining breast."
The American Society of Breast Surgeons recommends yearly screening mammography of the other breast after a unilateral mastectomy. It puts the risk of a new cancer in that breast at about 0.4% per year.
The ACS and ASCO survivorship guideline says survivors should be screened for a new primary breast cancer.

Some survivors may be offered extra imaging on top of the mammogram. The breast surgeons' statement supports access to yearly supplemental imaging for survivors with dense breast tissue, a diagnosis before age 50, or a high lifetime risk of cancer in the other breast. Breast MRI is one such test, and mri.md explains how MRI scans work. Our guide on breast MRI compared with mammography covers when each test fits.

What if both breasts were removed?

Routine mammograms usually stop. The American Cancer Society says that if both breasts have been removed, "mammograms should no longer be needed because there shouldn't be enough breast tissue left."

The American College of Radiology reaches the same view for people at high risk who had both breasts removed to prevent cancer. It rates screening mammography, ultrasound, and MRI as "usually not appropriate" after a bilateral prophylactic mastectomy. That rating holds with no reconstruction, with implants, and with tissue flaps.

The risk does not drop to zero. The National Cancer Institute reports that bilateral risk-reducing mastectomy lowers breast cancer risk by at least 95% in women with a harmful BRCA1 or BRCA2 variant. The figure is up to 90% in women with a strong family history. NCI explains that no surgeon can remove every bit of breast tissue that could become cancerous later. So physical exams continue, and any new lump needs a prompt look.

Does reconstruction change the answer?

Mostly no. The American Cancer Society says experts agree that people who had reconstruction after a simple, modified radical, or radical mastectomy do not need routine mammograms of that breast. A reconstructed breast is made of an implant, your own tissue, or both. It contains little or no breast gland tissue.

The American College of Radiology splits the question by reconstruction type for people with a history of cancer:

Implant reconstruction: screening mammography is rated "usually not appropriate."
Flap (your own tissue) reconstruction: screening mammography and 3D mammography are rated "may be appropriate." Ultrasound and MRI screening are rated "usually not appropriate."

That middle rating for flaps means the benefit is uncertain, so practice varies between centers. If your team orders a mammogram of a flap, this rating is the reason. Ask what they expect it to add.

Implants raise a separate question: checking the implant itself for rupture. That is not cancer screening. Our article on mammograms with breast implants covers it.

What about nipple-sparing mastectomy?

Here the answer is less settled. A nipple-sparing mastectomy keeps the nipple, the areola, and the breast skin. The American Cancer Society notes that "some doctors might recommend follow-up mammograms because some breast tissue can be left behind."

The National Cancer Institute adds that a total mastectomy gives slightly more risk reduction than a nipple-sparing one. That small gap is why some surgeons keep imaging in the plan. No major guideline we reviewed sets a fixed imaging schedule for this group. Ask your surgeon how much tissue was left and what follow-up they advise.

Is a lumpectomy different from a mastectomy?

Yes, and the screening rules are the opposite. A lumpectomy (also called breast-conserving surgery or partial mastectomy) removes the tumor and leaves most of the breast. That breast still needs mammograms.

The American Cancer Society says most experts recommend a mammogram of the treated breast 6 to 12 months after treatment ends. Follow-up mammograms of that breast are typically done at least yearly after that. The American Society of Breast Surgeons also recommends annual mammography of the treated breast after breast-conserving therapy. The other breast keeps its yearly mammogram too.

What should I do if I find a lump after a mastectomy?

Call your care team. Do not wait for the next visit. The "no routine mammogram" advice applies only when you have no symptoms.

The American Cancer Society lists the changes worth reporting: a lump, a skin change, or an area of concern found during a physical exam. In that case a diagnostic mammogram and breast ultrasound might be done, and breast MRI is sometimes used.

The American College of Radiology rates ultrasound as "usually appropriate" as the first test for a palpable lump or significant pain on a mastectomy side. That holds with or without reconstruction. Diagnostic mammography is rated "may be appropriate." A lump after reconstruction can be harmless scar tissue or fat necrosis (firm, damaged fat), but only imaging or a biopsy can confirm that. For the difference between the two exam types, see screening versus diagnostic mammograms.

The bottom line

Match the answer to your surgery:

One breast removed: no routine mammogram on that side, and a yearly mammogram of the other breast.
Both breasts removed: routine mammograms usually stop, and physical exams continue.
Reconstruction with an implant or flap: routine mammograms of the reconstructed breast are generally not needed.
Nipple-sparing mastectomy: some doctors still recommend mammograms, so ask.
Lumpectomy: yearly mammograms of the treated breast continue.

Any new lump, skin change, or pain needs a call to your team, whatever your surgery was.

Last updated: October 2026. This article is for informational purposes only and does not constitute medical advice. Follow-up after breast cancer surgery depends on your surgery type, cancer history, and genetic risk, so confirm your imaging plan with your oncology team.