Medical Oncologist
CION Cancer Clinics
Liver tumour ablation: what it is and how it works | CION Cancer Clinics
Liver ablation destroys a tumour through a needle passed through the skin, using heat, cold or alcohol, without cutting the liver open. For a small primary liver cancer it can be a curative-intent treatment, and it spares healthy liver, which matters if you have cirrhosis. This page explains the methods, what happens, the words on your report and who ablation does not suit. At CION Cancer Clinics, a multidisciplinary tumour board weighs your liver function and your scans before recommending any treatment.
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Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed October 2026, next review due October 2027
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The short answer
What is liver tumour ablation?
Ablation destroys a liver tumour where it sits, without cutting it out. A thin needle is passed through the skin into the tumour, guided by a scan, and heat or cold is used to kill the cancer cells and a small rim of healthy liver around them.
This page is about primary liver cancer, mainly hepatocellular carcinoma (HCC), the cancer that starts in the liver's own cells. If your report says the cancer spread to the liver from the bowel, breast or elsewhere, read ablation for liver metastases instead, because the decisions are different.
Why ablation matters so much in the liver
Many people with HCC also have cirrhosis, a scarred liver that may not cope with a large operation. Ablation removes very little healthy liver, so it can be offered to people whose liver is too weak for surgery. For a small tumour found early, ablation is a curative-intent option, in the same family as surgery and transplant. You can read more on how ablation can treat a small liver cancer completely.
Ablation works best on small tumours. Size, number and position decide whether it is possible.The different methods
What kinds of liver ablation are there?
The aim is the same in every method: kill the whole tumour plus a safety margin. What differs is the energy used.
Radiofrequency ablation (RFA)
An electrical current heats the needle tip and cooks the tumour from the inside. It is the most studied method for small HCC and the one most widely available in India.
More on radiofrequency ablation of the liver.Microwave ablation (MWA)
Microwaves heat the tissue faster and can reach a slightly larger area. It is less affected by nearby blood vessels, which can carry heat away during RFA.
Cryoablation and electroporation
Cryoablation freezes the tumour. Irreversible electroporation uses electrical pulses and is used rarely, mainly near structures that heat could damage. Neither is routine for liver cancer in India.
Ethanol injection (PEI)
Pure alcohol is injected into the tumour to kill it. It is older and needs more sessions, but it is still useful when a tumour sits where heat would be unsafe.
Your team chooses the method on
- Tumour size and number
- Where it sits in the liver
- What is available locally
Not sure whether this applies to you?
Ask an oncologistFrom scan to follow-up
What happens if ablation is recommended?
The tumour board reviews your scans
Oncologists, surgeons and radiologists look at your triple-phase CT or MRI and your liver blood tests together, and decide whether ablation, surgery, TACE or another route fits best.
CION arranges the procedure
Ablation is done by an interventional radiologist. CION coordinates it through NABH-accredited partner hospitals, and your team will tell you where it takes place.
The procedure itself
You are sedated or given a general anaesthetic. The needle goes in through a tiny cut under ultrasound or CT guidance. Most people stay in hospital for a night or so. You will be asked not to eat beforehand, and blood tests check that your clotting is safe for a needle.
The check scan
A contrast scan some weeks later shows whether the whole tumour was destroyed. If a piece survived, ablation can often be repeated. See the follow-up scan after ablation. After that, scans and blood tests continue on a regular schedule that your team sets.
On your report
What do the ablation words on my report mean?
- Percutaneous
- Through the skin. The needle goes in from outside, with no open operation.
- Ablation zone
- The area of dead tissue left after treatment. It should be larger than the tumour was.
- Margin
- The rim of healthy liver destroyed around the tumour, to catch cancer cells too small to see.
- Complete response
- The check scan shows no living tumour left in the treated area.
- Residual disease
- Part of the tumour still shows a blood supply on the check scan and may need another treatment.
- Local recurrence
- Cancer that grows back at the edge of the treated area later on. It is different from a new tumour appearing in another part of the liver.
- Arterial enhancement
- A bright area on a contrast scan where blood is flowing in. In a treated spot, it can mean living tumour is still there.
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Did you know
Ablation treats the tumour, not the liver around it. If cirrhosis or hepatitis B led to the cancer, new tumours can still form elsewhere in the liver, which is why regular scans continue long after a successful ablation.
Being straight with you
Who does ablation not suit, and what can this page not tell you?
Ablation does not suit everyone with liver cancer. It is usually not offered when the tumour is large, when there are many tumours, when cancer has grown into the main blood vessels of the liver or spread outside it, or when the liver is failing badly. A tumour sitting right beside the gallbladder, bowel, heart or a large bile duct may also be too risky to heat. For these situations, read who is suitable for liver ablation.
It cannot tell you whether ablation is right for you
That depends on your exact scans, your blood tests and how well your liver is working. Two tumours of the same size can get different advice because of where they sit. Only a team that has seen your images can answer it.
It cannot compare you with anyone else
A relative or neighbour who had ablation may have had a different cancer, a different liver or a different stage. Their experience is not a guide to yours.
If you have a scan report, the helpline can arrange for the tumour board to review it.Questions we are asked
Common questions about liver ablation
Is ablation the same as surgery?
No. Surgery removes the tumour along with a piece of liver through an operation. Ablation destroys the tumour in place through a needle, and nothing is taken out. Recovery is usually quicker, and much less healthy liver is lost, which matters if you have cirrhosis.
Does ablation hurt?
You are sedated or under anaesthetic during the procedure. Afterwards, some people have pain under the right ribs or in the right shoulder for a few days, which ordinary painkillers usually control. Your team will tell you what to take and what to watch for. Read more on whether liver ablation is painful.
How long does the procedure take?
The needle part is often under an hour for a single small tumour, though the whole visit is longer with preparation and recovery from sedation. Most people go home the next day. More tumours or a difficult position can make it longer.
Can ablation be done if I have cirrhosis?
Often, yes. That is one of its main strengths, because it spares healthy liver. Your liver still needs to be working reasonably well, with blood clotting good enough for a needle to be safe. Your team checks your liver blood tests and Child-Pugh score before deciding.
What is post-ablation syndrome?
Some people get a mild fever, tiredness and aches for a few days as the body clears the dead tissue. It usually settles on its own. A high fever, severe pain or yellowing of the eyes needs a call to your team the same day, since these can signal a complication.
Can ablation be repeated?
Yes. If the check scan shows a part of the tumour survived, or a new small tumour appears later, ablation can often be done again. Whether it is the right choice the second time depends on size, position and how your liver is doing then.
Does CION do ablation itself?
CION's oncologists and tumour board assess you and plan the treatment. The ablation is done by interventional radiologists at NABH-accredited partner hospitals, which CION coordinates. Follow-up, surveillance scans and any further treatment are then planned with your CION team.
What does liver ablation cost in Hyderabad?
The cost depends on the method, the number of tumours, the hospital stay and the scans needed. Ask for a written, itemised estimate before you agree. Our page on liver ablation cost in Hyderabad explains what builds the bill and how schemes may help.
Your Specialists
Meet CION's liver cancer specialists. Bring your scan reports and liver blood tests.
Our medical and surgical oncologists plan liver cancer care together, weighing the tumour and how well your liver works before choosing surgery, a liver-directed procedure or medicines.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
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Sources
- American Cancer Society — Liver Cancer Ablation: RFA, MWA, Cryotherapy, PEI, Histotripsy
- Cancer Research UK — Treatment for liver cancer
- EASL — EASL Clinical Practice Guidelines: management of hepatocellular carcinoma
- American Cancer Society — Treatment of Liver Cancer, by Stage
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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Has your scan shown a small liver tumour?
Share your scans and blood tests, and our tumour board will tell you whether ablation, surgery or another route fits your liver. One helpline serves every CION centre.