Liver cyst surgery (Surgery for liver cysts (cyst deroofing/fenestration))

What is liver cyst surgery?

A liver cyst is a fluid-filled sac in the liver. Most are simple cysts that are harmless, cause no symptoms, and are found by chance on a scan done for another reason. These usually need no treatment at all — just reassurance, and sometimes a repeat scan.

Surgery is considered when a cyst is large enough to cause symptoms, such as ongoing tummy pain or discomfort, a feeling of fullness, or pressure on nearby organs. Some people have many cysts (polycystic liver disease), which can make the liver very large and cause similar problems.

The usual operation does not remove liver tissue. Instead, the surgeon removes the top (roof) of the cyst so its fluid drains into the abdomen, where the body absorbs it. This is called deroofing or fenestration, and is most often done by keyhole (laparoscopic) surgery. Occasionally, removing part of the liver (resection) is needed for complicated or numerous cysts.

Not all cysts are simple. A few are caused by infection (such as a parasite, called a hydatid cyst) or, rarely, can be a tumour-related cyst. These are treated differently, which is why your cyst is checked carefully before any surgery, and the fluid or wall may be examined.

Types & techniques

There isn't one single operation. The right approach depends on you — which is something to discuss with your surgeon.

Deroofing vs aspiration with sclerotherapy

Both can be reasonable depending on the cyst and your health. Ask your team why one is being recommended for you and what the chance of the cyst coming back is.

Preparing for your surgery

• Expect scans (ultrasound, CT or MRI) to confirm the cyst is a simple cyst and not an infected or tumour-related cyst.
• Blood tests may be done, including checks for infection such as a parasite, if that is a possibility.
• Your case may be discussed with a specialist hepatobiliary team, especially for polycystic liver disease or complex cysts.
• Tell your team about all medicines, especially blood thinners, and any allergies.
• Mention if you have travelled to areas where parasitic (hydatid) cysts are common.
• Stop smoking as early as you can, as it slows healing.
• Arrange a lift home and some help for the first days, as you will have a general anaesthetic.

What happens

The usual operation is done under general anaesthetic, most often by keyhole surgery. The surgeon makes a few small cuts, passes a camera and instruments into the abdomen, and finds the cyst. They drain the fluid and remove the top (roof) of the cyst, so it can no longer fill up and press on nearby structures; the remaining fluid is absorbed by the body. A sample of fluid or cyst wall may be sent to the laboratory to confirm it is a simple cyst.

The operation often takes around one to two hours, longer for complex or multiple cysts. If keyhole surgery is not suitable, the same thing is done through a larger cut.

Afterwards you are watched in recovery as the anaesthetic wears off. Many people go home the same day or after a short stay. If a larger operation such as a liver resection is needed, the stay and recovery are longer.

Is this operation 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.

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.

Anaesthetic choices

The safest option depends on the operation, your health, the facility and your surgeon/anaesthetist. Ask what is planned and why.

The most relevant points for liver cysts are that the cyst can come back, and that it is important to be sure of the diagnosis first, because an infected (hydatid) or tumour-related cyst is treated very differently and can be harmed by ordinary draining. Ask your surgeon how likely your cyst is to return and how they have confirmed it is a simple cyst.

Published figures to discuss

The main figure that matters for liver cyst surgery is the chance of the cyst coming back, which depends on the technique used and whether you have one cyst or polycystic liver disease. Serious complications are uncommon for simple keyhole deroofing but rise with larger operations. Figures come mainly from surgical series and are best treated as ranges.

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.

Recovery — what to expect, and when

Recovery from keyhole deroofing is usually quick, often within a couple of weeks. A larger operation, such as removing part of the liver, has a longer recovery. Symptoms from pressure often ease soon after the fluid is drained.

• Tiredness for several days after surgery
• Shoulder-tip discomfort for a day or two after keyhole surgery
• Mild soreness at the wound sites
• A gradual easing of the fullness or pressure the cyst was causing
• Needing to pace yourself for the first week or two

Aftercare

• Take pain relief as needed and keep your wounds clean and dry.
• Move around gently to lower the risk of blood clots and chest problems.
• Avoid heavy lifting and strenuous activity until your surgeon says it is safe.
• Watch for signs of infection, bleeding or returning symptoms.
• Restart blood thinners and other medicines only as directed.
• Keep any follow-up appointment or scan to check the cyst.
• Know the warning signs and who to contact if you become unwell.

• Someone to take you home after the anaesthetic
• Light food and drink ready at home
• Simple pain relief available
• Written wound-care and warning-sign instructions
• Follow-up or scan date noted, if arranged
• Clinic and out-of-hours contact numbers saved

Scars and how they heal

Keyhole surgery leaves a few small scars that usually fade well. Open surgery leaves a larger scar across the upper abdomen, which fades over months but does not disappear. Your surgeon can show you where any cuts will be for your operation.

⚠ Get urgent help if…

• A high temperature, shivering or feeling cold and shaky (signs of infection)
• Severe or worsening tummy pain
• Yellowing of the skin or eyes, with dark urine (possible bile problem)
• Increasing redness, swelling or discharge from a wound
• Green or yellow fluid leaking from a wound or drain
• A swollen, painful calf, or breathlessness or chest pain (possible clot)
• Feeling increasingly unwell or being unable to keep fluids down

Who to contact: your surgeon or clinic 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 surgeon gives you.

Results & realistic expectations

Deroofing usually relieves the symptoms a large cyst was causing, such as pain, fullness or pressure, often soon after the fluid is drained. Checking the fluid or cyst wall confirms it was a simple cyst.

Liver cysts can come back over time, because the part of the cyst lining left behind can keep making fluid. A good result is lasting relief of symptoms, but you should be told that some cysts return and may need another procedure. For polycystic liver disease, surgery can ease symptoms but does not cure the underlying condition.

How long the benefit lasts varies. Many people get lasting relief after deroofing, but simple drainage alone tends to refill, and even after deroofing a proportion of cysts come back over the following years. Recurrence is more likely with polycystic liver disease, where surgery helps symptoms but does not stop new cysts forming. Your surgeon can give you a realistic idea of the chance of the cyst returning.

Combining with other procedures

Liver cyst surgery is usually a stand-alone treatment, but in polycystic liver disease, deroofing of several cysts may be combined, or combined with removing part of the liver, to reduce its size. Where a cyst is being treated, the fluid or wall is often examined at the same time to confirm the diagnosis.

Follow-up & long-term care

Follow-up depends on the type of cyst. After deroofing a simple cyst, you may have a check of your wounds and sometimes a scan to confirm the cyst has settled. People with polycystic liver disease usually have longer-term follow-up. You should know who to contact if symptoms return or you become unwell.

• A follow-up scan may be used to check the cyst has not refilled significantly.
• Longer-term monitoring for people with polycystic liver disease, as new cysts can form.
• Prompt review if pain, fullness, fever or jaundice develops.
• Telling your team if symptoms return, as another procedure is sometimes needed.

Revision and secondary surgery reality

• A proportion of cysts refill over time and may need another procedure.
• Recurrence is more likely in polycystic liver disease, where new cysts can also form.
• A keyhole operation may occasionally need to be switched to open surgery.
• Persistent or returning symptoms should prompt review and, sometimes, further treatment.

Ask your surgeon for their own revision rate, what counts as a revision, and what is included in the written aftercare policy.

What good aftercare looks like

• Confirmation of the diagnosis by examining the cyst fluid or wall where appropriate.
• A named contact and out-of-hours route for fever, severe pain or jaundice.
• A clear plan for follow-up, including a scan to check the cyst if needed.
• Longer-term monitoring and joined-up care for people with polycystic liver disease.
• Honest discussion of the chance of the cyst returning and what would happen if it does.

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:

• Whether the operation is keyhole or open, or whether a liver resection is needed
• How many cysts are treated, and their size and position
• The surgeon's and specialist team's fees
• Theatre time and the facility (hospital) fee
• The general anaesthetic and the anaesthetist's involvement
• Whether a day case or an overnight stay is needed
• Scans, any laboratory tests on the cyst, and follow-up

• The surgeon's fee and the facility (hospital) fee
• The anaesthetic cost
• Whether the procedure is a day case or includes an overnight stay
• Scans, laboratory tests on the cyst and results reporting
• Follow-up appointments and any scan to check the cyst
• What happens, and what it costs, if the cyst comes back or a complication occurs
• The cancellation policy

On the NHS? Liver cyst surgery is provided on the NHS when a cyst is causing symptoms; harmless cysts found by chance are usually just monitored, and private care may be used for choice or speed.

You're entitled to your total cost in writing — including aftercare and any revision — 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.

Choosing a surgeon safely

• Check your surgeon is on the GMC Specialist Register for this area.
• Make sure they practise at a CQC-registered location, and look for membership of bodies like BAAPS or BAPRAS.
• You're entitled to a two-stage consent process with time to reflect (a cooling-off period). The surgeon who will operate must consent you — not a salesperson.
• Be wary of pressure: time-limited offers, discounts 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 aftercare and any revision — before you decide.

How Vuemedics verifies every consultant →

Take this to your consultation. A good surgeon will welcome every one of these.

• Is my cyst definitely a simple cyst, and how have you confirmed that?
• Do I actually need treatment, or can the cyst safely be left and watched?
• Would deroofing or needle drainage with sclerotherapy be better for me, and why?
• How likely is the cyst to come back, and what happens if it does?
• Can this be done by keyhole surgery, and what is my recovery likely to be?
• If I have polycystic liver disease, what can surgery realistically achieve?
• 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 surgeon who carries out my operation, 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 operation 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?

Find a verified surgeon for liver cyst surgery

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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: Laparoscopic management of benign liver diseases — PMC Surgical management of polycystic liver disease — PMC Sclerotherapy and surgery for simple and polycystic liver cysts — PMC Complications arising in simple and polycystic liver cysts — PMC AUGIS — Association of Upper Gastrointestinal Surgery of GB and Ireland Liver UK (British Liver Trust) — Polycystic liver disease in adults (national UK patient information, reviewed 2023)

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.