Medical Oncologist
CION Cancer Clinics
Breast cancer surgery when you are pregnant | CION Cancer Clinics
Breast cancer surgery can be done at any stage of pregnancy, and it is often the first treatment. Because the breast is away from the womb, the operation carries less risk to the baby than surgery in the tummy. What changes is the planning: radiotherapy and hormone tablets usually wait until after birth, which can shape the choice between mastectomy and keeping the breast. CION Cancer Clinics’ surgical oncologists in Hyderabad can talk this through with you.
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Medically reviewed by Dr. Muralidhar MuddusettyConsultant Surgical Oncologist · MBBS (AIIMS), MS (Surgery, AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh) · last reviewed September 2026, next review due September 2027
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On this page
- Can breast cancer surgery be done while you are pregnant?
- Which operations might be offered during pregnancy?
- Which treatments can happen in pregnancy, and which usually wait?
- What usually happens from finding the lump to the operation?
- What do families believe about breast cancer in pregnancy?
- Who might need a different plan, and what can this page not tell you?
- What do the words on a breast biopsy report mean?
- Common questions about breast cancer surgery in pregnancy
The short answer
Can breast cancer surgery be done while you are pregnant?
Yes. Breast cancer surgery can be done at any stage of pregnancy, and it is often the first treatment. Because the breast is away from the womb, the operation itself carries less risk to the baby than surgery inside the tummy.
What changes because you are pregnant
The operation is planned with an obstetrician and an anaesthetist. The baby is checked before and after. Some treatments that usually follow breast surgery, such as radiotherapy and hormone tablets, are normally held until after delivery, and this can affect which operation is suggested.
What stays the same
The aim is still to remove the cancer with a clear margin, a rim of healthy tissue around it, and to check the lymph nodes, the small glands in the armpit that the cancer may reach first. Pregnancy does not mean you must accept a lesser operation.
Why breast cancer in pregnancy is often found later
Breasts naturally change, swell and feel lumpy in pregnancy, so a new lump is easy to put down to that. Any lump that does not settle should be checked. An ultrasound and a biopsy are both safe while pregnant.
This page explains the options. It cannot tell you which operation is right for you. That is decided with your treating team.The operations
Which operations might be offered during pregnancy?
The choice depends on the size and position of the cancer, how many weeks pregnant you are, and what treatment is likely to follow.
Mastectomy
The whole breast is removed. It is often chosen during pregnancy, especially early on, because it may avoid the need for radiotherapy that would otherwise have to wait until after the birth.
Breast-conserving surgery
Only the cancer and some healthy tissue around it are removed. Radiotherapy usually follows, so this suits women who can safely wait for it until after delivery.
Often considered when
- The cancer is small
- Pregnancy is further along
- Chemotherapy is planned first
Checking the lymph nodes
A few glands in the armpit are removed to see if the cancer has reached them. A small radioactive tracer can be used in pregnancy. The blue dye used outside pregnancy is usually avoided.
Reconstruction
Rebuilding the breast is usually delayed until after the pregnancy, when the other breast has settled in size and the operation can be planned properly.
Not sure whether this applies to you?
Ask an oncologistDuring and after
Which treatments can happen in pregnancy, and which usually wait?
Usually possible during pregnancy
Usually held until after delivery
Surgery to the breast and armpit
Radiotherapy to the breast or chest
Some chemotherapy, after the first three months
Hormone tablets such as tamoxifen
Ultrasound and biopsy
Targeted drugs such as trastuzumab
The pathway
What usually happens from finding the lump to the operation?
-
Ultrasound of the breast
An ultrasound is safe in pregnancy and is usually the first scan. A mammogram can also be done with the tummy shielded, if needed.
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A biopsy
A needle takes a small sample under local anaesthetic. It tells the team the type of cancer and whether it responds to hormones or other markers.
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Checking for spread, carefully
Tests are chosen to limit radiation to the baby. Not every woman needs scans of the whole body.
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A joint plan
Breast surgeon, medical oncologist and obstetrician agree whether surgery or chemotherapy comes first, and plan the timing around the pregnancy.
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The operation and recovery
The baby is checked before and after. Many women go home within a short stay, with a follow-up plan for the pregnancy and the cancer.
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Commonly believed
What do families believe about breast cancer in pregnancy?
"A lump in pregnancy is just milk glands. It will go away."
Most lumps in pregnancy are not cancer, but a lump that does not settle should still be checked. Waiting until after delivery is one of the main reasons breast cancer in pregnancy is found late.
"A biopsy or mammogram will harm the baby."
A needle biopsy is done under local anaesthetic and is safe in pregnancy. A mammogram gives a very small dose to the chest, and the tummy can be shielded.
"She will have to lose the whole breast because she is pregnant."
Not always. Breast-conserving surgery is possible for some women, particularly later in pregnancy, when radiotherapy can safely wait until after the birth.
"She will never be able to breastfeed."
Many women can still feed from the other breast. It depends on the operation and on treatment afterwards, since some medicines pass into milk. Ask your team before delivery.
Being straight with you
Who might need a different plan, and what can this page not tell you?
Surgery is not always the first step, and one operation does not suit every woman.
When surgery may not come first
If the cancer is large, fast growing or has reached several lymph nodes, chemotherapy may be offered first, after the early months of pregnancy, to shrink it before the operation. If the cancer has spread to other organs, surgery to the breast may not be the main treatment. Breast-conserving surgery may not suit a woman early in pregnancy who would need radiotherapy that cannot wait.
What this page cannot tell you
It cannot tell you your outlook, which operation you should have, or how your pregnancy will go. Those depend on your biopsy report, your scans and your examination, read together by your team.
Questions worth asking
Ask why a particular operation is recommended and what the other option would involve. Ask what treatment would follow, and whether any of it must wait for the birth.
On your report
What do the words on a breast biopsy report mean?
- Receptor status
- Whether the cancer cells respond to the hormones oestrogen and progesterone. It guides treatment after surgery.
- HER2
- A protein on some breast cancer cells. If it is present, targeted drugs may be used, usually after delivery.
- Grade
- How different the cancer cells look from normal cells. It is not the same as stage.
- Sentinel lymph node
- The first gland in the armpit that the cancer would reach. It is removed and checked instead of clearing all the glands.
Questions we are asked
Common questions about breast cancer surgery in pregnancy
Is breast cancer surgery safe for my baby?
Breast surgery is away from the womb, so the risk to the baby is lower than with surgery in the tummy. The main points to manage are the anaesthetic and watching for early labour afterwards. Your obstetrician and anaesthetist plan this with the surgeon, and the baby's heartbeat is checked before and after.
Should I have surgery or chemotherapy first?
It depends on the size and type of the cancer and on how far along the pregnancy is. Chemotherapy is usually avoided in the first three months but can be given later. Your breast surgeon and medical oncologist will explain which order they suggest for you, and why.
Can radiotherapy be given while I am pregnant?
Radiotherapy to the breast is usually held until after delivery, because of the dose that could reach the baby. This is one reason mastectomy is sometimes suggested earlier in pregnancy, and breast-conserving surgery more often later, when the wait for radiotherapy is shorter.
Is the sentinel node test safe in pregnancy?
Using a small amount of radioactive tracer is generally considered acceptable, as very little reaches the baby. The blue dye used in some centres is usually avoided because of a small risk of allergic reaction. Ask your surgeon which method they plan to use and why.
Can I have breast reconstruction at the same time?
Reconstruction is usually delayed until after the pregnancy. A longer operation adds to the anaesthetic, and the breasts change size through pregnancy and feeding, which makes matching them difficult. Ask your surgeon about the options for later.
Will my baby need to be delivered early?
Not usually because of the breast surgery itself. Teams generally aim to let the pregnancy continue as close to term as is safe. Timing of delivery may be discussed if treatment after surgery cannot wait. Your obstetrician will explain what they would weigh.
Does being pregnant make breast cancer worse?
For women at the same stage, pregnancy itself has not been clearly shown to change the outlook. Cancers found in pregnancy are often found later, which is the bigger problem. This page cannot give you an outlook for your own cancer. Ask your team.
Can I breastfeed after breast cancer surgery?
Often from the other breast, and sometimes from the treated side after breast-conserving surgery, though milk may be less. Feeding is not advised during chemotherapy or some other treatments, because medicines can pass into milk. Plan this with your team before the birth.
Meet the Specialists
17+ senior cancer specialists. One panel for your case.
Trained at AIIMS, Tata Memorial, and leading international centres. Combined 150+ years of experience. Every complex case is reviewed by 3+ of them — together.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
Surgical Oncologist
Surgical Oncologist
Dr. Vinay Mamidala
MBBS, MS(General Surgery), M.Ch(Surgical Oncology), FMAS, FARIS(Ongoing)
Surgical Oncologist
Radiation Oncologist
Radiation Oncologist
Radiation Oncologist
Hematologist
Surgical Oncologist
Dr. Vajja Sandeep Kumar
MBBS, MS (General Surgery), DrNB (Surgical Oncology), FALS Oncology
Surgical Oncologist
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Sources
- National Cancer Institute — Breast Cancer Treatment During Pregnancy (PDQ), Patient Version
- Cancer Research UK — Breast cancer
- American Cancer Society — Breast cancer
- Macmillan Cancer Support — Cancer information and support
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.
Keep reading
Related pages
Breast cancer guideEverything about breast cancer beyond pregnancyBreastfeeding after cancer surgeryPlanning feeding around treatmentAnaesthesia risk to the babyWhat being put to sleep means for the pregnancyDeciding between treating now and delivering firstWhen treatment timing and delivery overlap
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