CT-guided lung biopsy (CT-guided percutaneous transthoracic lung biopsy)
A test where a doctor uses CT scan pictures to guide a needle through the chest wall and take a small sample from a lung abnormality, usually to find out what it is.
✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review
In short
- A radiologist uses CT pictures to guide a needle through the chest wall and sample an abnormal area in the lung, usually to find out if it is cancer, infection or something else.
- A collapsed lung (pneumothorax) and bleeding into the lung are fairly common in mild forms; a smaller number of people need a chest drain or further treatment.
- It is a day-case test under local anaesthetic, but you are watched for a few hours and may have a chest X-ray afterwards.
- A small sample does not always give a firm answer, so be clear about what happens if the result is inconclusive.
A plain-English summary. The detail — including risks and recovery — is below.
At a glance
A general guide. Your specialist will give you advice for your situation.
Reaches abnormalities in the outer lung that a bronchoscopy often cannot
You have a bleeding tendency or are on blood thinners that cannot be safely paused.
You lie still and hold your breath at certain points while the radiologist guides the needle using CT pictures. The skin is numbed and you stay awake.
A chest X-ray or scan after the biopsy and a defined period of monitored observation.
You lie still and hold your breath at certain points while the radiologist guides the needle using CT pictures...
You rest in a recovery area, often lying on a particular side, and have a chest X-ray or scan to check for a...
If your checks are clear you usually go home the same day. Arrange for someone to take you, and do not drive...
Take it easy and avoid heavy lifting and exertion. A small amount of blood in your spit and mild chest discomfort...
What is a CT-guided lung biopsy?
A CT-guided lung biopsy is a test to take a small sample of tissue from an abnormal area in the lung, so it can be examined under a microscope. A radiologist uses pictures from a CT scanner to guide a thin needle through the skin and chest wall, directly into the area being investigated.
It is usually done when a scan has shown a lump, nodule or shadow in the outer part of the lung that needs a tissue diagnosis, and when this area cannot be reached easily through the airways with a bronchoscopy. It helps find out whether something is cancer, infection or another condition.
Because the needle passes through the lung, the two main risks are a collapsed lung (pneumothorax) and bleeding into the lung. Both are fairly common in mild forms, and a smaller number of people need a chest drain or further treatment. You stay awake, with the skin numbed, and are watched for a few hours afterwards.
A biopsy is only a small sample and does not always give a firm answer. This guide explains what to expect; it is not personal medical advice.
Types, options & approaches
There may be different ways to do this. The right approach depends on the clinical question and your circumstances.
CT-guided lung biopsy compared with bronchoscopy biopsy
| Point | CT-guided biopsy | Bronchoscopy biopsy |
|---|---|---|
| How it reaches the lung | Needle through the chest wall | Camera through the airways |
| Best for | Lesions in the outer lung | Lesions in or near the airways |
| Main risks | Collapsed lung, bleeding | Bleeding, collapsed lung (less often) |
| Sedation | Awake, skin numbed | Usually sedated |
The two tests reach different parts of the lung. Your team chooses the one most likely to reach your abnormality safely.
Preparing for your test
- You will usually have a blood test beforehand to check how well your blood clots.
- Tell the team about all your medicines, especially blood thinners such as warfarin, aspirin, clopidogrel, apixaban, rivaroxaban, edoxaban or dabigatran. Some people need a temporary change before this procedure, but the plan differs by medicine, the exact procedure and their risk of bleeding or blood clots. Do not stop, skip or restart any of these medicines unless the team responsible for your procedure gives you specific instructions.
- You may be asked not to eat for a few hours before the biopsy.
- Mention any lung condition such as emphysema or COPD, as this can increase the risk of a collapsed lung.
- Tell the team about allergies and any previous reaction to local anaesthetic.
- Arrange for a responsible adult to take you home, as you should not drive immediately afterwards.
- Plan for 24–48 hours of taking it easy, and ideally have someone with you that night.
What happens
You stay awake throughout. You lie on the CT scanner table, usually on your back, front or side depending on where the abnormality is. A first set of CT pictures is taken to plan the safest route for the needle.
The skin over the chest is cleaned and numbed with local anaesthetic. You will be asked to hold your breath at certain moments so the lung stays still while the needle is moved into place, with the CT scanner used to check the position. When the needle is in the right spot, one or more samples are taken. You may feel pressure or a brief sharp sensation, but it should not be very painful.
The biopsy itself usually takes around 30 minutes to an hour. Afterwards you have a chest X-ray or scan to check for a collapsed lung, and you are watched for a few hours before going home.
Is this test right for me?
A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.
May not be suitable if…
- You have a bleeding tendency or are on blood thinners that cannot be safely paused.
- Your lung function or oxygen level is too low to tolerate a possible collapsed lung safely.
- The abnormality cannot be reached safely by a needle without crossing major blood vessels.
- A less risky test, such as a bronchoscopy or a repeat scan, could give the needed information.
Delay or rearrange if…
- You have an active chest infection or are acutely unwell, until this is treated and more stable.
- Your blood thinners have not been managed according to a clear plan.
- A clotting blood test has not been done where needed.
- You cannot arrange someone to take you home or be with you that night.
- You have a flight booked soon, as flying after a collapsed lung can be dangerous.
Alternatives to discuss
- A bronchoscopy or EBUS, which reach different parts of the lung and chest
- A repeat CT or PET-CT scan to watch a small or low-risk nodule over time
- A surgical lung biopsy for larger samples when needed
- Watchful waiting with repeat imaging for very low-risk findings, if your team advises
- Treating an obvious infection first and rescanning, where appropriate
Before you decide
Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.
What matters most to me?
Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.
What are all my options?
Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.
What would make me pause?
Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.
What happens if I do nothing today?
For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.
Comfort, sedation or contrast choices
If local anaesthetic, sedation, contrast or pain relief is used, ask what is planned, why, and what it means afterwards.
Benefits
- Reaches abnormalities in the outer lung that a bronchoscopy often cannot
- Provides a tissue sample to find out whether something is cancer, infection or another condition
- Can give enough tissue for detailed cancer tests that guide treatment
- Is less invasive than a surgical operation to remove or sample the lung
- Done under local anaesthetic, so you avoid a general anaesthetic in most cases
Risks & complications
- A collapsed lung (pneumothorax), often small and needing no treatment
- Bleeding into the lung, which usually shows as coughing up small amounts of blood and settles
- Mild chest discomfort or pain at the needle site
- Anxiety from staying still and holding your breath during the test
- A collapsed lung large enough to need a chest drain (a tube to let the air out)
- Coughing up larger amounts of blood (haemoptysis)
- Needing to stay in hospital overnight if a complication occurs
- Infection at the biopsy site or in the chest
- Heavy bleeding needing a further procedure or operation to stop it
- Air leaking into the space around the heart or under the skin
- An air bubble entering the bloodstream (air embolism), which is very rare but serious
- Very rarely, a life-threatening complication
The two main risks are a collapsed lung (pneumothorax) and bleeding, and both are more likely if the abnormality is small or deep, if you have emphysema or COPD, or if you are on blood thinners. A small collapsed lung often needs no treatment, but some people need a chest drain. Ask your radiologist what your personal risk is, whether you are likely to need a chest drain, and exactly what warning signs to watch for after you go home.
Published figures to discuss
A collapsed lung and bleeding are the main risks, and reported rates vary widely depending on how complications are counted, the technique, and patient factors such as emphysema and how small or deep the abnormality is. The figures below come from a large meta-analysis of CT-guided lung biopsies (about 12,000 procedures) and are cautious pooled ranges, not a precise prediction for you. Many pneumothoraces are small and need no treatment.
| Figure | Reported range | How to interpret it | Source / confidence |
|---|---|---|---|
| Collapsed lung (pneumothorax) overall, core biopsy | About 1 in 4 people (around 25%); about 1 in 5 (around 19%) with fine needle aspiration | Many are small and need no treatment. More likely with emphysema and small or deep lesions. | Complication rates of CT-guided transthoracic lung biopsy — meta-analysis (European Radiology)pmc.ncbi.nlm.nih.govPublished figure |
| Collapsed lung needing a chest drain | Around 1 in 18 people (roughly 5–6%) | A smaller group of those with a pneumothorax need a drain and sometimes a short hospital stay. | Complication rates of CT-guided transthoracic lung biopsy — meta-analysis (European Radiology)pmc.ncbi.nlm.nih.govPublished figure |
| Bleeding into the lung (pulmonary haemorrhage) | Around 1 in 6 people (roughly 18%) with core biopsy; lower with fine needle aspiration | Often shows only on the scan or as small amounts of coughed-up blood, and usually settles on its own. | Complication rates of CT-guided transthoracic lung biopsy — meta-analysis (European Radiology)pmc.ncbi.nlm.nih.govPublished figure |
| Coughing up blood (haemoptysis) | Around 1 in 25 people (roughly 4%) with core biopsy | Usually small and short-lived. Larger amounts are uncommon but need urgent attention. | Complication rates of CT-guided transthoracic lung biopsy — meta-analysis (European Radiology)pmc.ncbi.nlm.nih.govPublished figure |
These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.
What happens afterwards
There is only a tiny skin puncture, but because the needle passes through the lung you are watched for a few hours and have a chest X-ray to check for a collapsed lung before you go home.
- Mild chest discomfort or ache at the needle site
- Coughing up small amounts of blood for a short time
- Feeling a bit anxious or tired after lying still and holding your breath
- A small dressing over the puncture site
- Waiting one to two weeks for results
Aftercare
- Arrange for a responsible adult to take you home, and do not drive immediately afterwards.
- Rest and avoid heavy lifting, vigorous exercise and straining for 24–48 hours.
- Do not fly until your team confirms there is no collapsed lung, as flying can make it worse.
- Keep the small dressing clean and dry as advised.
- Take simple pain relief such as paracetamol for mild discomfort if needed, and ask when to restart any blood thinners.
- Watch closely for increasing breathlessness or chest pain in the hours and days afterwards.
- Keep your follow-up appointment, and save the unit's out-of-hours contact number.
- Clotting blood test arranged beforehand
- Plan agreed for stopping and restarting blood thinners
- Someone booked to take you home
- 24–48 hours of light activity planned, with someone around that night ideally
- No flights booked until cleared
- Unit and out-of-hours contact number saved
- Follow-up appointment for results noted
Scars and how they heal
The needle leaves only a tiny puncture mark on the skin, covered with a small dressing. This heals quickly and any mark is usually very faint. There is no surgical scar.
⚠ Get urgent help if…
- Increasing breathlessness or feeling unable to catch your breath (possible collapsed lung)
- Sharp or worsening chest pain, especially on breathing in
- Coughing up more than small amounts of blood, or larger amounts of fresh blood
- Feeling faint, dizzy or as if you might pass out
- A high fever, shivering or feeling very unwell (possible infection)
- Sudden severe symptoms — call for emergency help straight away
Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.
General guidance — it doesn't replace the specific advice your specialist gives you.
Results & realistic expectations
The samples are examined under a microscope and often tested further, which is why a firm result usually takes a week or two. A clear result can show whether the abnormality is cancer, infection or another condition, and can guide which treatment is needed.
Because the sample is small, the biopsy sometimes misses the target or does not give a definite answer. A normal or inconclusive result does not always rule out cancer, so your team may suggest a repeat biopsy, a different test, or close monitoring with repeat scans. Your radiologist and respiratory physician will explain what your result means and the next step.
A biopsy reflects the tissue sampled at one moment. If the result is unclear, or your scans change over time, a repeat biopsy or further tests may be needed. A diagnosis is often reached by combining the biopsy with scans and a specialist team discussion rather than the biopsy alone.
Related tests, treatments or support
A CT-guided lung biopsy is usually planned after a CT or PET-CT scan and is often discussed alongside a bronchoscopy, which reaches different parts of the lung. If a diagnosis of cancer is confirmed, further staging scans and tests usually follow to plan treatment.
Follow-up & long-term care
Results are usually explained at a follow-up appointment within a week or two, often as part of a specialist clinic or team discussion. You should be told who is coordinating your care, who to contact if results are delayed, and what to do if you develop warning signs of a collapsed lung or bleeding.
Repeat, follow-on and what comes next
- A small sample can miss the target or be inconclusive, so a repeat biopsy is sometimes needed.
- Some people need a chest drain and a short hospital stay for a collapsed lung.
- A diagnosis is often confirmed by combining the biopsy with scans and a team discussion.
- Detailed cancer tests on the sample can take longer than the routine result.
Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.
What good aftercare looks like
- A chest X-ray or scan after the biopsy and a defined period of monitored observation.
- Clear written warning signs for a collapsed lung and bleeding, and who to contact out of hours.
- A named route back to the radiology or respiratory team if you become unwell.
- A defined plan and appointment for explaining your results, including any team discussion.
- A clear plan for restarting any blood thinners that were stopped, and advice not to fly until cleared.
What affects the cost
Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:
- The CT scanner time and the interventional radiologist's fee
- Whether a core biopsy or fine needle aspiration is taken, and the number of samples
- Laboratory and pathology charges, including any rapid in-room sample checking
- The observation period afterwards, including a chest X-ray to check for a collapsed lung
- Treatment of any complication, such as a chest drain or an overnight stay
- A follow-up appointment to discuss results, and any further tests if the result is inconclusive
- The radiologist's fee and the CT scanner or facility fee
- Laboratory and pathology fees for all samples taken
- The cost of post-procedure observation and a chest X-ray
- What happens, and what it costs, if you need a chest drain or an overnight stay for a collapsed lung
- The cost of the follow-up appointment to explain your results
- What happens, and what it costs, if the result is inconclusive and needs a repeat biopsy or further test
On the NHS? A CT-guided lung biopsy is a standard NHS test when clinically indicated; private access is mainly used for speed, choice of consultant or a second opinion rather than because the NHS does not offer it.
You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.
Consent traps and marketing red flags
These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.
Consent traps
- Not being told how common a collapsed lung and bleeding are, even if usually mild.
- Not discussing the chance of needing a chest drain or an overnight stay.
- Blood thinners or a bleeding tendency not being properly reviewed beforehand.
- No clear warning signs for a delayed collapsed lung, or no out-of-hours contact.
- Not being told the sample may not give a firm answer and could need repeating.
Marketing red flags
- Describing it as a 'quick, low-risk needle test' without mentioning collapsed lung and bleeding.
- Implying a normal biopsy completely rules out cancer.
- Promising same-day results when laboratory testing takes days to weeks.
- Not discussing safer alternatives such as a bronchoscopy or repeat scan where reasonable.
Choosing a specialist safely
- Check the specialist is on the GMC Specialist Register for this area.
- Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
- You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
- Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
- You're entitled to your total cost in writing — including any follow-up — before you decide.
Questions to ask your medical professional
Take this to your consultation. A good specialist will welcome every one of these.
- Why is a CT-guided biopsy the best way to sample my abnormality, rather than a bronchoscopy?
- What is my personal risk of a collapsed lung or bleeding, given my lung condition and medicines?
- Am I likely to need a chest drain, and would I have to stay in hospital if so?
- What will this result change about my treatment, and what happens if it is normal or inconclusive?
- What warning signs should make me seek urgent help, and who do I contact out of hours?
- Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
- Will you be the specialist who carries out my test, and who looks after me afterwards?
- What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
- What does a realistic result look like — and what can this test not achieve?
- What are my options, including waiting, doing nothing for now, or choosing a different approach?
- Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
- What is the total cost in writing, including any follow-ups, and how much time do I have to decide?
Frequently asked questions
Is a CT-guided lung biopsy available on the NHS?
Will it hurt?
How likely is a collapsed lung?
Will I be awake?
When will I get my results?
What if the biopsy does not give an answer?
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How we made this page
Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →
Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.
Sources & standards: Complication rates of CT-guided transthoracic lung biopsy — meta-analysis (European Radiology) The Princess Alexandra Hospital NHS Trust — CT-guided biopsy patient information Patient-reported experiences of CT-guided lung biopsy — prospective cohort study (PMC) Cancer Research UK — Tests and scans Radiopaedia — CT-guided thoracic biopsy (clinical reference)
Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.
Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.
Related guides: Bronchoscopy · Endobronchial ultrasound (EBUS) · Bronchial and transbronchial biopsy · Pleural aspiration (chest drain) · Body plethysmography (lung volume test)