What is a sentinel lymph node biopsy?
A sentinel lymph node biopsy (SLNB) checks whether breast cancer has started to spread into the lymph nodes in the armpit, by removing only the first few nodes the cancer would reach.
Who is it recommended for?
It is done for most invasive breast cancers, at the same time as a lumpectomy or mastectomy, when the lymph nodes do not appear to be affected on examination or scans.
How the procedure is done
Mapping
Before or during surgery, a small amount of blue dye or a radioactive tracer is injected near the tumour.
Finding the sentinel nodes
The tracer travels to the first lymph nodes that drain the area of the tumour, called the sentinel nodes.
Removal
The surgeon removes only these nodes, usually one to five, and sends them to the laboratory for examination.
Recovery timeline
- During your breast surgery
The biopsy is part of your main operation and does not add extra days in hospital.
- First 48 hours
If blue dye was used, your urine or skin may look greenish-blue for a day or two. Discomfort in the armpit is usually mild.
- Results
If the nodes are clear, no further lymph node surgery is needed. If they contain significant cancer, your team will discuss further treatment.
Risks and side effects
Because only a few nodes are removed, long-term problems are uncommon. Possible effects include:
- Temporary numbness of the upper inner arm
- A small risk (under 5%) of long-term arm swelling (lymphoedema)
- Allergic reaction to the dye (rare)
Your surgeon will explain the specific risks for your case before you give consent.
What the Sentinel Lymph Node Biopsy package includes
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Hospital and medical care
Your private hospital room, nursing care, pre-operative tests, consultations with your surgeon, anaesthesia, the operation itself and the medication you take home.
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VIP transfers
A private driver meets you at the airport and takes you between the airport, your hotel and the hospital.
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Translator and companion
A medical translator at the hospital, and a companion can travel with you at no extra cost.
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Meals and comfort
Daily meals for you and your companion throughout your stay.
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24/7 patient coordinator
A dedicated coordinator answers your questions before, during and after your trip, in your language.
Sentinel Lymph Node Biopsy FAQ
Why not remove all the lymph nodes?
Removing only the sentinel nodes gives accurate staging with a much lower risk of arm swelling than removing all the armpit nodes.
When will I know the result?
The pathology result usually takes several days. Your surgeon will explain it to you before you fly home or by video call.
