Medical Oncologist
CION Cancer Clinics
Ablation for lung tumours: treating a small tumour through a needle | CION Cancer Clinics
Lung ablation destroys a small lung tumour with heat or cold, through a needle guided between the ribs on CT, instead of removing part of the lung. It is mainly used for small early lung cancers, or a few spread spots, in people not fit for surgery. It does not suit large tumours or those beside main airways. This page covers who it suits, what happens and the risks. 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 lung tumour ablation, and who is it for?
- What decides whether ablation is an option?
- What happens before, during and after lung ablation?
- What can go wrong, and who does it not suit?
- What do families often believe about lung ablation?
- What do the words on a lung report mean?
- Common questions about ablation for lung tumours
The short answer
What is lung tumour ablation, and who is it for?
Lung ablation destroys a small tumour in the lung with heat or cold, through a thin needle passed between the ribs under CT guidance, instead of removing part of the lung. It is mainly used for small tumours in people who are not fit enough for lung surgery.
Which lung tumours it is used for
The first group is small, early lung cancer that has not spread, in someone whose breathing, heart or age makes an operation too risky. The second group is a few small spots that have spread to the lung from a cancer elsewhere, such as the bowel or kidney, when the main cancer is under control.
How the heat or cold is made
RFA stands for radiofrequency ablation, and uses an electrical current to heat the needle tip. Microwave ablation heats faster and over a wider area. Cryoablation freezes the tumour instead. Your team picks one based on the size and position of the tumour and what the centre offers, so ask which one they would use.
This page explains ablation. It cannot tell you whether it is the right treatment for your lung tumour.
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One thing that cannot wait after you go home
Sudden breathlessness, sharp chest pain that is worse when you breathe in, or coughing up more than a streak of blood can mean the lung has partly collapsed or is bleeding. Go to the nearest emergency department the same day and tell them you recently had lung ablation. Do not wait to see whether it settles overnight.
Not sure whether this applies to you?
Ask an oncologistBefore a plan is made
What decides whether ablation is an option?
A tumour board of surgeons, radiation oncologists, lung specialists and radiologists usually looks at these together.
Size and number
Ablation works most reliably on small tumours. Larger ones, or many spots in both lungs, are harder to treat completely. Your team measures each spot on the CT and counts how many there are before suggesting it.
Position in the lung
Tumours near the outer part of the lung are easier to reach. Those close to large airways, the heart or major blood vessels carry more risk, and blood flow can carry heat away from them.
Your breathing
Breathing tests show how much lung reserve you have. Ablation removes very little working lung, which is why it can suit people who could not cope with losing a lobe.
Needs extra care with
- Severe emphysema or COPD
- Only one working lung
Other options on the table
Focused radiotherapy, called SBRT, is often the main alternative for people who cannot have surgery. Your team will explain why one is being suggested over the other.
The pathway
What happens before, during and after lung ablation?
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Tests beforehand
A recent CT, often a PET-CT, breathing tests and blood tests for clotting. A biopsy confirms what the tumour is, sometimes in the same session as the ablation.
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Your medicines
Tell the team about blood thinners such as aspirin, clopidogrel or apixaban, and any inhalers. They will tell you what to do with each. Do not stop a medicine on your own.
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On the CT table
You have a general anaesthetic or strong sedation with numbing medicine in the skin. The needle is guided into the tumour with repeated scans, and the energy is switched on for several minutes.
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The check X-ray
A chest X-ray or scan afterwards looks for air leaking around the lung. If a lot has leaked, a small tube may be placed to let it out.
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The follow-up scans
The treated area looks larger and hazier on early scans, which is expected. Later CT or PET-CT scans check that the tumour has not grown back.
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Being straight with you
What can go wrong, and who does it not suit?
The most common problem is air leaking out of the lung into the space around it, called a pneumothorax, which means a partly collapsed lung. Many are small and settle alone. Some need a chest tube for a day or more.
Other things that can happen
Coughing up a little blood-stained phlegm for a few days is common. Less often there is fluid around the lung, a chest infection, or a flu-like spell of fever and aches called post-ablation syndrome. Ask your team how often they see each of these.
Who it is usually not suitable for
Ablation is not usually used when a tumour is large, sits right beside a main airway or the heart, or has spread to lymph nodes, the small glands that filter fluid in the chest. It is also not the usual choice for someone fit enough for surgery, because surgery lets the whole tumour and nearby glands be examined.
What this page cannot tell you
It cannot tell you how long the effect will last, whether the cancer will return, or whether ablation is right for you over SBRT or surgery. Those depend on your scans and your health.
Commonly believed
What do families often believe about lung ablation?
"If he cannot have the operation, there is nothing left."
For small lung tumours, ablation and focused radiotherapy both exist for exactly this situation. Being unfit for surgery closes one door, not every door.
"The scan looks bigger, so the tumour has grown."
The treated area is meant to be larger than the tumour, and it looks swollen and hazy for weeks. Your radiologist compares scans over time rather than judging from one picture.
"A needle in the lung will make the breathing worse for good."
Ablation destroys only a small amount of lung. Most people's breathing returns to where it was before once the first days of soreness pass.
"A clear first scan means we can stop the check-ups."
A tumour can regrow at the edge of the treated area, and new spots can appear elsewhere in the lung. Regular scans find these while they are still small enough to treat again, so keep every appointment.
On your report
What do the words on a lung report mean?
- Nodule
- A small round spot in the lung. Most are not cancer; a biopsy or follow-up scan decides.
- NSCLC
- Non-small cell lung cancer, the most common type of lung cancer.
- Pulmonary metastasis
- A spot in the lung that has spread from a cancer that started somewhere else.
- Ground-glass halo
- A hazy ring seen around the treated area on early scans. It usually shows the edge of the ablation, not new cancer.
- Pneumothorax
- Air in the space around the lung, causing it to partly collapse.
Questions we are asked
Common questions about ablation for lung tumours
How long will my father stay in hospital?
Many people stay one night so the team can check a chest X-ray for air leaking around the lung. If a chest tube is needed, the stay is longer, usually until the leak stops. Plan for someone to take him home and stay nearby for the first day or two.
Can he travel home to the district by bus afterwards?
Ask the team before you book. Long journeys soon after lung ablation are harder if a small air leak develops on the way, far from help. Many families arrange to stay close to the hospital for a short while before travelling.
Is ablation the same as focused radiotherapy?
No. Ablation uses a needle to heat or freeze the tumour in one session. Focused radiotherapy, called SBRT, uses beams of radiation from outside the body over a few sessions with no needle. Both are used for small tumours in people who cannot have surgery, and your team will explain which suits the tumour.
He already has breathing problems. Is it too risky?
Not necessarily. Ablation is often considered precisely because it removes so little lung. Severe emphysema does raise the chance of air leaking afterwards. Breathing tests and a careful look at the CT help the team judge the risk for him.
Is coughing up some blood afterwards normal?
Streaks of blood in the phlegm for a few days are common and usually settle. Coughing up more than a spoonful, or blood with breathlessness or chest pain, is not. Go to the nearest emergency department the same day and say he has had lung ablation.
Will it need to be done again?
Sometimes. If later scans show the tumour growing at the edge of the treated area, a second ablation, radiotherapy or another treatment can be considered. New spots elsewhere in the lung are assessed the same way, on their own merits.
Can he have chemotherapy or immunotherapy as well?
Yes, when the wider plan calls for it. Ablation treats the spot that was aimed at. Medicines treat cancer cells anywhere in the body. Whether both are needed depends on the type and spread of the cancer, and your oncologist will explain the order.
Is lung ablation covered by Aarogyasri or insurance?
It is often covered when it is part of an approved cancer treatment plan. Aarogyasri, CGHS, ECHS and EHS are accepted, and most cashless insurers are empanelled. What you pay depends on your cover. Call the helpline with your card details and we will check before you travel.
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Dr. C. Raghavendra Reddy
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Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
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Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
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Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
Surgical Oncologist
Surgical Oncologist
Dr. Vinay Mamidala
MBBS, MS(General Surgery), M.Ch(Surgical Oncology), FMAS, FARIS(Ongoing)
Surgical Oncologist
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Hematologist
Surgical Oncologist
Dr. Vajja Sandeep Kumar
MBBS, MS (General Surgery), DrNB (Surgical Oncology), FALS Oncology
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Sources
- NHS — Lung cancer: treatment
- Cancer Research UK — Lung cancer
- NICE — Lung cancer: diagnosis and management (NG122)
- National Cancer Institute — Lung cancer
- American Cancer Society — Lung 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
Radiofrequency ablation (RFA) explainedHow the heat needle worksSurgery or ablation: how the choice is madeWhat the team weighs for your tumourPain and recovery after ablationThe first days at homeRadiation therapy guideFocused radiotherapy, the main alternativeAblation: RFA, microwave, cryo and IREEvery page in this guide
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