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Lumpectomy: what the operation involves | CION Cancer Clinics
In a lumpectomy the surgeon removes the breast cancer with a thin rim of healthy tissue and keeps the rest of the breast. It is usually done under general anaesthesia, often with a check of the armpit lymph nodes, and many people go home the same day or the next. Radiotherapy usually follows. This page walks through the day and the words on your report. CION Cancer Clinics’ surgical oncologists in Hyderabad can talk this through with you.
MI
Medically reviewed by Dr. Mohammed ImaduddinConsultant Surgical Oncologist · MBBS, MS (General Surgery), MCh (Surgical Oncology) · last reviewed September 2026, next review due September 2027
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On this page
- What happens in a lumpectomy?
- What happens from arrival to going home?
- What does the surgeon actually take out?
- What do the words on the report mean?
- What do families worry about that is not true?
- How is it different from a mastectomy on the day?
- Who is it not for, and what can this page not tell you?
- Common questions about lumpectomy surgery
The short answer
What happens in a lumpectomy?
In a lumpectomy the surgeon removes the cancer along with a thin rim of healthy tissue around it, and leaves the rest of the breast in place. Most people have it under general anaesthesia, which means you are fully asleep, and many go home the same day or the next.
Why it is called breast conserving surgery
The aim is to take out all of the cancer while keeping the breast. You may also hear it called wide local excision or partial mastectomy. All three names describe the same idea. The shape of the breast usually changes a little, and how much depends on the size of the lump and the size of your breast.
It is usually one part of a plan, not the whole plan
A lumpectomy is almost always followed by radiotherapy to the breast. Some people also need chemotherapy, hormone tablets or targeted drugs, either before or after the operation. The operation removes what can be seen. The treatment after it lowers the chance of the cancer coming back in the same breast.
This page describes what usually happens. Your own operation may differ, and your surgeon will explain why.On the day
What happens from arrival to going home?
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Arriving with an empty stomach
You will be told when to stop eating and drinking. Bring every report and scan you have, and a list of the medicines you take. Do not stop any medicine on your own; the team will tell you what to do with each one.
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Marking the lump, if it cannot be felt
If the cancer was found on a mammogram and cannot be felt, a thin wire or a tiny marker is placed in the breast first, using an ultrasound or mammogram as a guide. It shows the surgeon exactly where to go.
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Meeting the surgeon and anaesthetist
The surgeon may draw on your skin with a marker pen. The anaesthetist asks about your health and any past reactions. This is a good time to ask anything you still do not understand.
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The operation
The surgeon makes a cut over or near the lump, removes it with its rim of healthy tissue, and checks the lymph nodes in the armpit. Small metal clips are often left where the lump was, to guide radiotherapy later.
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Waking up and going home
You wake in a recovery area. The breast will feel sore and tight. Once you are eating, walking and your pain is controlled with tablets, you can usually go home with a clear list of what to watch for.
Not sure whether this applies to you?
Ask an oncologistIn theatre
What does the surgeon actually take out?
Four things usually happen in the one operation. Knowing them makes the pathology report far easier to follow.
The lump and its rim
The cancer comes out in one piece with a layer of normal tissue around it. That rim is called the margin. The piece is marked so the laboratory knows which edge faced which direction.
The first lymph nodes
Most people have a sentinel node biopsy, which removes only the first one or few nodes that drain the breast. A dye or tracer injected before surgery helps the surgeon find them.
If nodes are already known to hold cancer, more may be removed.Clips left behind
Tiny metal clips mark the space where the lump was. They stay in for life and do not set off airport scanners. They help the radiotherapy team aim at the right place.
Reshaping, when needed
Where a larger piece has to come out, the surgeon may move nearby breast tissue to fill the gap and keep a more natural shape.
You may hear this called
- Oncoplastic surgery
- Therapeutic mammoplasty
On your report
What do the words on the report mean?
- Clear margin
- No cancer cells were found at the cut edge of the tissue removed. This is what the surgeon is aiming for.
- Close or involved margin
- Cancer cells were found at or very near the edge. A second, smaller operation may be suggested to take a little more tissue.
- Sentinel node
- The first lymph node that fluid from the breast drains into. If it is free of cancer, the other nodes usually are too.
- Seroma
- A pocket of clear fluid that collects where the lump was. It is common and often settles on its own.
- Re-excision
- A second operation through the same scar to remove more tissue when a margin is not clear.
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Commonly believed
What do families worry about that is not true?
"Removing only the lump leaves cancer behind. Taking the whole breast is safer."
For the people it suits, a lumpectomy followed by radiotherapy is a standard, well-studied choice, not a lesser one. The team offers it only when the whole cancer can be removed with a clear margin. It is not offered as a way to cut corners.
"Opening the breast will make the cancer spread."
Surgery does not make cancer spread through the body. This fear is one of the most common reasons families delay, and delay is what actually changes the picture.
"If the operation went well, radiotherapy is not needed."
Radiotherapy after a lumpectomy is part of the plan from the start. It treats any cancer cells too small to see that may remain in the breast. Skipping it is a separate decision to discuss with your oncologist, not a sign that surgery succeeded.
"A second operation means the surgeon made a mistake."
Cancer cells at an edge cannot always be seen during surgery. The laboratory finds them days later under a microscope. Going back for a little more tissue is a known part of this operation.
Side by side
How is it different from a mastectomy on the day?
Lumpectomy
Mastectomy
Removes the lump and a rim of healthy tissue
Removes the whole breast
Often home the same day or the next
Often a slightly longer stay
A drain is less often needed
A drain is more often left in for a while
Radiotherapy to the breast usually follows
Radiotherapy depends on the lump and the nodes
A second operation for margins is sometimes needed
A second operation for margins is less common
Being straight with you
Who is it not for, and what can this page not tell you?
A lumpectomy does not suit everyone with breast cancer. It is usually not offered when there is cancer in several separate parts of the same breast, when the lump is large for the size of the breast, or when radiotherapy to that breast is not possible, for example after earlier radiotherapy to the chest or during some stages of pregnancy.
The decision belongs to your team
This page cannot tell you whether a lumpectomy is right for you. Your surgeon, oncologist and radiation oncologist weigh the scans, the biopsy report, your breast size, your genes and your own wishes together. Some people who could have a lumpectomy choose a mastectomy, and that is a valid choice too.
Questions worth taking to the appointment
Ask whether the lump needs marking first, how the lymph nodes will be checked, and what happens if a margin is not clear. Ask who to call once you are home.
Bring the family member who will help you decide. Two people remember far more of the conversation than one.Questions we are asked
Common questions about lumpectomy surgery
Will I be awake during a lumpectomy?
Most people are fully asleep under general anaesthesia. Occasionally, for a very small lump and no lymph node surgery, local anaesthesia with sedation is used, which numbs the area while you stay drowsy. The anaesthetist will explain which one is planned for you and why, and you can ask any questions before the day.
How long will I stay in hospital?
Many people go home the same day or the next morning. A longer stay is more likely if more lymph nodes were removed, if a drain was left in, or if you have other health conditions. Arrange for someone to take you home, because you should not drive or travel alone straight after an anaesthetic.
How much will it hurt afterwards?
Most people describe soreness, tightness and bruising rather than severe pain. The armpit is often more uncomfortable than the breast if lymph nodes were removed. You will be given pain tablets to take at home. If the pain gets worse rather than better, call the team rather than waiting.
When do I get the results from the tissue?
The laboratory needs time to examine the tissue and the lymph nodes, so the report usually comes back at your follow-up visit, not on the day of surgery. It will say whether the margins are clear and whether the nodes held cancer. Those two answers shape what treatment comes next.
Will my breast look very different?
Usually the breast is a little smaller and the shape may change near the scar. How noticeable this is depends on how much tissue was removed compared with your breast size, and where the lump sat. Radiotherapy can also make the breast firmer. Ask your surgeon to show you where the cut will be.
What should I watch for once I am home?
Call the team if the wound turns red, hot or leaks pus, if you get a fever, or if the breast swells quickly and becomes tense and painful. Some fluid under the scar is common and often settles on its own. A sudden, painful swelling is different and needs to be seen the same day.
Can my mother have this if she is elderly?
Age on its own does not rule it out. What matters more is her general fitness for an anaesthetic, whether radiotherapy is practical for her, and what she herself wants. The team may suggest a different plan for someone frail. Ask them to explain the choices in terms she can follow.
Is lumpectomy covered by Aarogyasri or insurance?
Breast cancer surgery is usually covered under Aarogyasri, CGHS, ECHS and EHS when it is part of an approved treatment plan, and most cashless insurers include it. What you pay yourself depends on your own cover. Call the helpline with your card or policy details and the team will check before you are admitted.
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Sources
- NHS — Breast cancer in women: treatment
- Cancer Research UK — Surgery for breast cancer
- National Cancer Institute — Surgery choices for women with DCIS or breast cancer
- American Cancer Society — Surgery for breast cancer
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
Wire and Seed Localisation Before LumpectomyHow a lump that cannot be felt is marked before surgeryMargins After LumpectomyWhat clear, close and involved margins meanLumpectomy Recovery Week by WeekWhat the first weeks at home usually look likeThe Day of the OperationFasting, consent and the theatre routine
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