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Draining bile before gallbladder cancer surgery | CION Cancer Clinics
Not everyone needs a bile stent before gallbladder cancer surgery. A stent or drain is usually placed only when jaundice is deep, the bile is infected, itching is severe, or a large part of the liver will be removed. Opening the duct carries its own infection risk, so teams weigh it case by case. This page explains the methods, the day itself and the warning signs. 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
- Do you need a bile stent before gallbladder cancer surgery?
- What are the ways bile can be drained?
- What happens when an ERCP stent is placed?
- How do an ERCP stent and a PTBD drain compare?
- What do families often believe about stents?
- Who does drainage not suit, and what can this page not tell you?
- Common questions about bile drainage before surgery
The short answer
Do you need a bile stent before gallbladder cancer surgery?
Not always. A stent or drain is usually placed before surgery only when jaundice is deep, when there is infection in the bile, when itching is severe, or when a large part of the liver will be removed. Many people go to surgery without one.
What a stent or drain does
Gallbladder cancer can press on the bile duct and block it. Bile then backs up into the blood and turns the eyes and skin yellow. A stent is a small tube placed inside the duct to hold it open. A drain does the same job from outside, through a tube in the skin.
Why it is not done for everyone
Opening the duct lets bacteria from the gut reach the bile. That can raise the chance of infection around the operation. A stent can also block or slip. So teams weigh the benefit of clearing jaundice against these risks, and sometimes operating first is the safer route.
Ideally the detailed staging scans are done before any stent goes in. A stent can blur the picture of the duct.How it is done
What are the ways bile can be drained?
Which one you are offered depends on where the blockage sits and what surgery is planned.
ERCP stent
A thin flexible camera goes through the mouth into the small bowel. The doctor passes a stent up into the bile duct from inside. No cut is made in the skin.
Usually suits
- Blockage lower down the duct
- People who want no external tube
PTBD drain
A radiologist passes a fine needle through the skin into a bile duct in the liver, guided by scans. A tube is left in, draining into a bag or onward into the bowel.
Usually suits
- Blockage high up, near the liver
- When an ERCP has not worked
EUS-guided drainage
An ultrasound camera inside the stomach or bowel guides a direct passage into the duct. It is offered in fewer centres and needs a specialist team.
Ask your centre which of these they offer.Not sure whether this applies to you?
Ask an oncologist
!
With a stent or drain in, this cannot wait
A fever with shivering, yellowing that returns or deepens, severe belly pain, or a drain that stops draining or falls out needs your team or an emergency department the same day. Say that you have a bile stent or drain. Do not wait until morning, and do not push a loose drain back in yourself.
On the day
What happens when an ERCP stent is placed?
Before you arrive
You will be asked not to eat for several hours. Tell the team about blood thinners and diabetes medicines. They will say what to do with them. Do not stop any on your own.
Sedation
You are given medicine to make you sleepy, or a light anaesthetic, and your throat may be numbed. You lie mostly on your front.
The stent goes in
The camera is passed through the mouth. X-ray pictures show the blockage, a sample of bile or cells may be taken, and the stent is placed.
Watching afterwards
You rest while the sedation wears off. Some people go home the same day. Others stay overnight so the team can watch for pain or fever.
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Side by side
How do an ERCP stent and a PTBD drain compare?
ERCP stent
PTBD drain
Placed through the mouth, fully inside the body
Placed through the skin, often with a tube outside
Better for blockages lower down the duct
Better for blockages high up near the liver
Can irritate the pancreas, causing belly pain
Can leak, slip or cause bleeding at the skin
No bag or dressing to care for at home
Needs daily care of the tube and dressing
Commonly believed
What do families often believe about stents?
"The stent treats the cancer."
A stent only lets bile flow. It eases jaundice and itching, and helps the liver recover, but the cancer itself still needs surgery or other treatment.
"Once the yellow goes, we can delay the operation."
Jaundice clearing is a good sign that the stent works, not that the cancer has settled. Keep to the plan and dates your team gives you.
"Every patient must have a stent before surgery."
Many do not need one. Placing a stent that is not needed can add infection risk. Ask why one is being recommended in your case.
"A drain with a bag means he will have it for life."
Drains placed before surgery are usually removed during or after the operation, once bile has a new route. Ask how long yours is expected to stay.
Being straight with you
Who does drainage not suit, and what can this page not tell you?
Drainage may not be advised for someone with only mild jaundice who can go straight to surgery. It may also be unsuitable where the ducts are blocked at many levels, so that one stent cannot clear enough of the liver, or where bleeding problems make a needle through the liver unsafe.
The waiting period
After drainage, the team often waits for the yellow level in the blood to fall before operating. How long that takes varies from person to person. Blood tests are repeated to track it.
What only your team can answer
This page cannot tell you whether you need a stent, which kind, or when your operation will be. Useful questions to ask: were my staging scans done before the stent? Why this method? What level do you want the jaundice to reach before surgery? Who do I call at night if I get a fever?
Questions we are asked
Common questions about bile drainage before surgery
Does placing a stent hurt?
You are sedated or anaesthetised, so most people remember little of it. Afterwards the throat may be sore for a day with an ERCP. With a drain through the skin, there is soreness where the tube enters. Severe or worsening belly pain is not expected and should be reported straight away.
Plastic or metal stent: which is used?
When surgery is still planned, teams often choose a plastic stent or a type that can be removed, because some metal stents make the operation harder. Plastic stents can block sooner. Ask which type is being placed and whether it affects your operation.
How will I know if the stent is blocked?
The usual signs are yellowing coming back, dark urine, pale stools, itching, or fever with shivering. A fever is the most urgent of these because it can mean infection in the bile. Contact your team or go to an emergency department the same day.
How do I look after a drain at home?
The nurse will show you how to empty the bag, change the dressing and flush the tube if needed. Keep the tube taped so it cannot be pulled. Note how much comes out each day. A sudden drop, leaking at the skin or a tube that slips out should be reported.
Can I eat normally with a stent in?
Usually yes, once you are home. Appetite often improves as jaundice clears. Build strength before surgery with regular meals and enough protein, such as dal, eggs, curd and paneer. A dietitian can help if you have lost a lot of weight.
Will I need antibiotics?
Antibiotics are often given around the time of the procedure, and a bile sample may be tested to pick the right one if infection develops. Take only what your team prescribes. Do not start leftover antibiotics at home if a fever appears. Call instead.
Why do I keep having blood tests?
The tests track bilirubin, the yellow substance behind jaundice, along with liver function, kidneys and clotting. Surgery is usually safer once these improve. The trend over several tests matters more than any single result.
Is the stent procedure covered by schemes?
It is often covered as part of an approved cancer treatment plan. Aarogyasri, CGHS, ECHS and EHS are accepted, and most cashless insurers are empanelled. Call the helpline with your card or policy details and we will check what your cover includes.
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Dr. Owais Mohammed
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Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
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Dr. Vinay Mamidala
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Sources
- NHS — Endoscopic retrograde cholangio-pancreatography (ERCP)
- American Cancer Society — Surgery for Gallbladder Cancer
- National Cancer Institute — Gallbladder Cancer Treatment (PDQ), patient version
- Cancer Research UK — Gallbladder 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
Jaundice Before and After Gallbladder SurgeryWhy jaundice changes the planBile Duct Resection for Gallbladder CancerWhen the blocked duct is removed at surgeryWhen Gallbladder Cancer Is Not OperableWhere stents fit when surgery is ruled outDrains, Tubes, Lines and CathetersCaring for tubes before and after surgeryFitness, Tests and PrehabilitationGetting stronger while the jaundice settles
Talk to us
Told you may need a stent first?
Send us the scans and blood reports. A specialist will explain whether drainage is likely in your case and how it fits around surgery. One helpline serves every CION centre.