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CION Cancer Clinics
Axillary lymph node dissection: what the operation involves | CION Cancer Clinics
An axillary lymph node dissection removes most of the lymph nodes from the armpit on the side of a breast cancer, together with the fat they sit in. It is done under a general anaesthetic, usually in the same operation as the breast surgery, through a cut in the armpit crease. This page walks you through what is removed, what is left, what the day looks like and what to expect afterwards. 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
- What does an axillary lymph node dissection actually remove?
- What the surgeon takes out, and what is left in place
- What happens from admission to going home?
- Words you will see on the operation note and pathology report
- Four things families tell us about this operation, and what is true
- Who this operation does not suit, and what this page cannot tell you
- Common questions about axillary lymph node dissection
The short answer
What does an axillary lymph node dissection actually remove?
It removes most of the lymph nodes from the armpit on the side of the breast cancer, together with the pad of fat they sit in. The surgeon does not pick out nodes one at a time. The whole block of fatty tissue comes out, and the pathologist finds and counts the nodes inside it.
Why the armpit matters in breast cancer
The lymph nodes in the armpit (the axilla) are the first place breast cancer cells usually travel to when they leave the breast. Removing them does two jobs. It takes out cancer that has already reached them, and it tells your team how many nodes were involved, which shapes the rest of the plan.
When it is usually recommended
Most often it is offered when a needle test or a sentinel node biopsy (a smaller operation that checks only the first few nodes) has already shown cancer in the armpit. It is also used when nodes can be felt or seen on a scan before surgery, and after chemotherapy given first when involved nodes have not fully cleared.
Whether you need this operation, a sentinel biopsy, or no armpit surgery at all is a decision for your treating team. This page explains the operation. It does not decide it for you.Inside the operation
What the surgeon takes out, and what is left in place
The nodes and their fat
The nodes from the lower and middle parts of the armpit are removed as one block of fatty tissue. The number found inside varies a lot from person to person.
Usually removed
- Level I nodes, below the small chest muscle
- Level II nodes, behind it
- Level III nodes only when disease is found there
The nerves the surgeon works around
Two nerves that move the shoulder blade and the back muscle run through the area and are protected. A smaller nerve that carries feeling from the inner upper arm often has to be cut or stretched, which is why the skin there feels numb afterwards.
The vein and the muscles
The large vein carrying blood from the arm is the upper limit of the operation and is left alone. The chest and back muscles stay in place. Your arm keeps its strength, although the shoulder can be stiff until you exercise it.
A drain, in most cases
Removing the fat leaves a space that fills with fluid. A thin tube is left in the armpit and connected to a small bottle, so the fluid drains out rather than collecting under the skin. It goes home with you and is taken out at a clinic visit.
Not sure whether this applies to you?
Ask an oncologistOn the day
What happens from admission to going home?
Admission and marking
You come in fasting, as instructed. The surgeon marks the side and confirms the plan with you. Bring every report and scan you have.
The anaesthetic
The operation is done under a general anaesthetic, so you are asleep throughout. The anaesthetist will have asked about your medicines and allergies. Do not stop or change any medicine on your own before you come in.
The operation
A cut is made in the natural crease of the armpit, or the same cut as a mastectomy is used. The fatty block with the nodes is freed from the vein, the nerves and the chest wall and lifted out. The wound is closed with stitches under the skin and a drain is placed.
Waking up
You wake in the recovery area with a dressing, a drain and a drip. The arm feels heavy and the inner arm feels numb. Pain is usually manageable with ordinary tablets by the next day.
Going home
Most people go home within a day or two, drain still in place, with written instructions and a date to come back. A physiotherapist shows you the first arm movements before you leave.
On your report
Words you will see on the operation note and pathology report
- ALND or axillary clearance
- Two names for the same operation. Some reports say "axillary dissection" or "level II clearance". They all describe removing the block of nodes.
- Levels I, II and III
- Three regions of the armpit, defined by where they sit against the small chest muscle. A standard clearance takes levels I and II.
- Sentinel node
- The first node or nodes that fluid from the breast drains into. A sentinel node biopsy removes only these, and is a smaller operation.
- Node-positive
- Cancer cells were found in at least one node. The report will say how many nodes were examined and how many were involved.
- Extranodal extension
- Cancer has grown through the outer wall of a node into the fat around it. Your team uses this detail when planning radiotherapy.
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Commonly believed
Four things families tell us about this operation, and what is true
"If the nodes are removed, the cancer cannot spread anywhere."
Removing the armpit nodes deals with the cancer that is in them. It does not change what may already have travelled further by the bloodstream, which is why chemotherapy, hormone tablets or radiotherapy are still often advised afterwards.
"The arm will be useless afterwards."
The muscles and the main nerves to the arm are preserved. Stiffness and numbness are common early on and improve with the exercises you are given. Long-term arm swelling (lymphoedema) is a real risk and needs lifelong care of the arm, but most people return to normal work and daily life.
"A smaller operation would have been enough."
Full clearance is now offered less often than it once was, and only where the nodes are known or very likely to be involved. If your team has recommended it, ask what was found that made the smaller operation unsuitable. That is a fair question.
"More nodes removed means a worse cancer."
The number removed reflects the anatomy and the pathologist's search, not the cancer. What matters is how many of the nodes examined contained cancer. Twenty nodes with one involved is a very different picture from five nodes with four involved.
Being straight with you
Who this operation does not suit, and what this page cannot tell you
A full axillary dissection is not the right operation for everyone with breast cancer. Where the nodes are clear on scans and on a needle test, a sentinel node biopsy is usually enough. Where only one or two sentinel nodes are involved, many teams now offer radiotherapy to the armpit instead of a second operation.
People for whom the team may hesitate
Someone who already has swelling in that arm, a very stiff shoulder, or a serious heart or lung condition that makes a general anaesthetic risky will be looked at more carefully. So will someone whose cancer has already spread elsewhere, where an armpit operation may add little. None of these rules the operation out on its own.
What this page cannot tell you
It cannot tell you whether you need the operation, how many nodes will be found, or what your report will say. It cannot tell you what treatment will follow, because that depends on the pathology. And it cannot tell you your outlook. Those answers come from your surgeon and oncologist, with your reports in front of them.
The question most families forget to ask is: what would happen if we chose the smaller operation instead?Questions we are asked
Common questions about axillary lymph node dissection
How long does the operation take?
On its own, the armpit part usually takes around an hour, sometimes a little more. When it is done with a mastectomy or a lumpectomy, the whole operation is longer. Your surgeon will give you a rough time on the day. Recovery is added on top.
Will I be in a lot of pain afterwards?
Most people describe a heavy, pulling ache rather than sharp pain, and it settles over the first week. Ordinary tablets prescribed at discharge are usually enough. A burning feeling on the inner arm is the cut nerve and is expected. Pain that gets worse rather than better, or a hot swollen wound, needs a call to the clinic.
How long will the drain stay in?
It stays until the amount it collects each day falls low enough, which varies a lot between people. You will empty and record it at home and bring the record to the clinic. The team decides when it comes out. Removing it is quick and does not need another anaesthetic.
Can I move my arm after surgery?
Yes, and you should. Gentle movements begin the next day and a physiotherapist shows you which ones. The shoulder becomes stiffer the longer it is kept still. Heavy lifting and hard stretching are avoided until the wound has healed and the drain is out. Ask before returning to physical work.
Is the same operation done with a mastectomy and a lumpectomy?
The armpit part is the same. With a mastectomy it is usually done through the same cut. With a lumpectomy a separate small cut is made in the armpit crease. Whether the breast is removed or kept does not change how the nodes are dealt with.
Will the numbness go away?
Some of it does, slowly, over many months, as nearby nerves take over. Some people are left with a patch of altered feeling on the inner upper arm for good. Be careful with razors, hot water and tight sleeves on that side, because you may not feel a small injury.
When will I get the pathology report?
Usually within a week or two of the operation, because the pathologist has to find, process and examine every node. The report is discussed at a tumour board and then with you. If you receive it before that appointment, bring it and your questions rather than trying to read it alone.
Is this operation covered by Aarogyasri or my insurance?
Breast cancer surgery, including the armpit part, is generally covered under Aarogyasri, CGHS, ECHS and EHS, and by most cashless insurers, when it is part of an approved treatment plan. Call the helpline with your card details and we will check your specific cover.
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MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
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Dr. Vinay Mamidala
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Sources
- American Cancer Society — Lymph node surgery for breast cancer
- Cancer Research UK — Surgery for breast cancer
- NHS — Breast cancer in women
- NICE — Early and locally advanced breast cancer: diagnosis and management (NG101)
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
Sentinel Node Biopsy or Full Axillary Clearance?The smaller operation, and when it is enoughThe Drain After Axillary DissectionLiving with the drain at homeArm Exercises After Axillary DissectionThe movements that keep the shoulder freeLymphoedema Risk After Axillary ClearanceThe long-term arm risk, honestly explainedThe Day of the OperationWhat every cancer operation day looks like
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