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Portal vein embolisation: growing the liver before surgery | CION Cancer Clinics
Portal vein embolisation, or PVE, blocks the blood supply to the part of the liver that will later be removed. Blood is redirected to the part that will stay, which grows over the following weeks and makes a large liver operation safer. It is done through a needle by a radiologist, not through a cut. This page explains the procedure, the wait, who it may not suit, and its limits. 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 is portal vein embolisation, and why is it done before liver surgery?
- What happens during the procedure?
- Who is it for, and what can it not do?
- What happens in the weeks between PVE and the operation?
- What do the words around PVE mean?
- What do families worry about with PVE?
- Common questions about portal vein embolisation
The short answer
What is portal vein embolisation, and why is it done before liver surgery?
Portal vein embolisation, often shortened to PVE, blocks the blood supply to the part of the liver that will later be removed. The blood is redirected to the part that will stay, and over the next few weeks that part grows bigger, making a large operation safer.
Why growing the liver first helps
After a big liver operation, the liver that is left has to do all the work straight away. If planning scans show it would be too small, the risk of liver failure after surgery is too high. PVE gives it a head start, so it is larger and stronger by the time of the operation.
Who does it
It is done by an interventional radiologist, a doctor who treats through needles and fine tubes guided by scans. It is not an operation and does not need a cut. Your liver surgeon asks for it as part of the overall plan.
When it is usually suggested
PVE is considered when a planned operation would remove most of one side of the liver and the scans show the other side is small. It is also used more readily when the liver has been affected by chemotherapy, fat or long-standing bile blockage, because those livers need a larger share left behind. Your team explains why it fits your situation before you are asked to agree.
PVE does not treat the cancer itself. It prepares the healthy liver for the operation that does.On the day
What happens during the procedure?
Preparation
You are usually asked not to eat for some hours before. Blood tests check clotting. Tell the team about any blood thinners; they will decide what to do with them.
Sedation and numbing
You are given medicine to relax you, or a general anaesthetic in some centres. The skin over the liver is numbed.
Reaching the vein
Using ultrasound and X-ray pictures, the radiologist passes a fine needle and then a thin tube through the skin into a branch of the portal vein inside the liver.
Blocking the branches
Small particles, glue or tiny coils are placed in the branches feeding the side to be removed. X-ray pictures confirm the flow has moved to the other side, and the tube is taken out.
Not sure whether this applies to you?
Ask an oncologistHonest expectations
Who is it for, and what can it not do?
PVE is useful for a particular group of people. It is worth knowing both sides before you agree to it.
Who it is usually offered to
People who need a large liver operation, where the part that would be left looks too small or too weak on planning tests.
Often after
- Chemotherapy for bowel cancer spread to the liver
- A bile duct cancer needing a major resection
Who it may not suit
People with a blood clot in the portal vein, severe cirrhosis, cancer spread widely outside the liver, or clotting problems that make needle procedures unsafe.
What it cannot promise
Not every liver grows enough. And during the waiting weeks the tumour can grow, so some people find at the next scan that surgery is no longer possible.
What to ask your team
Ask why PVE is advised, what happens if the liver does not grow, and whether chemotherapy will be given during the wait.
!
After PVE, do not wait on these
Some pain on the right side, a mild fever and feeling sick for a day or two are common. Call your team or go to the nearest emergency department the same day if the pain becomes severe, the fever is high or comes with shivering, the skin or eyes turn yellow, you feel faint or breathless, or the needle site keeps bleeding. Do not wait until the planned scan.
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Between PVE and surgery
What happens in the weeks between PVE and the operation?
Most people go home within a short stay and get back to light daily activity. The waiting period is when the liver does its growing.
The repeat scan
After some weeks, a CT or MRI scan measures how much the part that will stay has grown. The team looks at the size it has reached and how quickly it grew. A good response usually means the operation can go ahead.
If the growth is not enough
Your team may wait longer and scan again, or consider a further step, such as also blocking a vein that drains the liver. Some centres use a two-stage operation instead. Sometimes surgery is not possible, and other treatments are discussed.
Looking after yourself while you wait
Eat regular meals with enough protein, keep walking every day, and avoid alcohol completely. Keep diabetes well controlled. Take your medicines as your doctors have told you, and do not start liver tonics or herbal remedies. Keep the date of the repeat scan and any blood tests in one place, so nothing is missed if you travel home.
What this page cannot tell you
It cannot tell you whether PVE is right for you or how your liver will respond. Those depend on your liver's health, the tumour and the plan your team has made. The decision is made with you, not for you.
On your reports
What do the words around PVE mean?
- Portal vein
- The large vein that carries blood from the gut into the liver. It supplies most of the liver's blood.
- Embolisation
- Deliberately blocking a blood vessel from the inside with particles, glue or coils.
- Future liver remnant
- The part of the liver that will be left after surgery.
- Hypertrophy
- Growth of that part in size. Your repeat scan report will describe it.
- Interventional radiologist
- A doctor who treats through needles and fine tubes guided by scans.
Commonly believed
What do families worry about with PVE?
"Blocking a blood vessel will damage the whole liver."
Only the branches feeding the side to be removed are blocked. The rest of the liver gets more blood, not less, which is what makes it grow.
"PVE is a treatment for the cancer."
It is not. It prepares the healthy liver so the operation that removes the cancer can be done safely. Chemotherapy may be given during the wait to keep the cancer in check.
"After PVE, surgery is certain."
PVE is a step towards surgery, not a promise of it. The repeat scan decides. Knowing this beforehand makes the result easier to hear either way.
"The waiting weeks are wasted time."
The wait is when the liver grows. Use it to eat well, keep walking, stop alcohol completely and stay in touch with your team.
Questions we are asked
Common questions about portal vein embolisation
Does portal vein embolisation hurt?
The skin is numbed and you are sedated, so most people feel pressure rather than sharp pain during it. Afterwards there is often an ache on the right side of the tummy and sometimes up to the shoulder. Pain medicines are given, and it usually eases over a few days.
How long will I stay in hospital?
Usually a short stay, often overnight or a little longer, so the team can watch for bleeding and control pain. You go home once you are eating, walking and comfortable. You will be told who to call if anything changes at home.
How long before the liver grows enough?
Usually some weeks. The repeat scan is timed by your team, and the date can move if the liver needs longer. The speed of growth varies with liver health. A liver affected by chemotherapy, fat or cirrhosis tends to grow more slowly.
Can the cancer grow while we wait?
It can, which is one of the main risks of the waiting period. Some teams give chemotherapy during the wait to reduce this. The repeat scan checks the tumour as well as the liver. If the cancer has spread, the plan may change.
What are the risks of PVE?
Serious problems are uncommon. The main ones are bleeding, infection, a bile leak from the needle track, and a clot spreading into the part of the portal vein that should stay open. Your radiologist will explain these before you sign consent.
Should I stop my blood thinner before PVE?
Do not stop, start or change it on your own. Medicines such as aspirin, clopidogrel or warfarin may need a plan. Your radiologist, surgeon and the doctor who prescribed the medicine will tell you exactly what to do and when.
Can I travel home to my district during the wait?
Often yes, once you have recovered from the procedure. Before you leave, make sure you know the date of the repeat scan, any blood tests needed, and the number to call. If warning signs appear, go to the nearest emergency department rather than travelling back.
Is PVE covered by Aarogyasri or insurance?
It is often covered when it is part of an approved cancer surgery plan. Aarogyasri, CGHS, ECHS and EHS are accepted, and most cashless insurers are empanelled. Call the helpline with your card details so the team can check your cover before admission.
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Sources
- National Cancer Institute — Adult primary liver cancer treatment (PDQ), patient version
- American Cancer Society — Surgery for liver cancer
- American Cancer Society — Embolization therapy for liver cancer
- Cancer Research UK — Liver 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.
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