
Liver Resection - Liver Surgery
The liver is the only organ that grows back, and the whole assessment turns on whether enough will be left to carry you through the weeks before it does. How the remnant is measured, how it can be grown first, and what the alternatives are.
About This Department
The liver is the only solid organ that grows back. In 33 living donors followed with repeated scans, the remaining liver had returned to roughly three quarters of its original volume by three months and around 88 percent by four years. That capacity is what makes this operation possible at all, and the central question in every liver resection is whether enough functioning liver will be left behind to carry you through the weeks before the regrowth arrives.
Free consultation
Ask whether enough liver would be left, and what the plan is if not
Send the cross-sectional scans of the abdomen with their written reports, ideally the images themselves rather than a summary, plus any biopsy result, your liver blood tests including bilirubin, albumin, clotting and platelet count, any hepatitis B or C result, a note of how much alcohol you drink, your medication list including chemotherapy already given with drug names and dates, and details of any previous abdominal surgery. A liver surgeon reviews the volumes and tells you whether resection is possible now, whether the remnant needs growing first, and what the alternatives are. No fee, no obligation, and a coordinator replies in your own language, usually within the same working day.
The reasons
Liver surgery covers a wider range of situations than most cancer operations, and the reason yours is being done changes almost everything about how the decision should be made. Find your row before reading further.
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| Reason | What limits the operation | What else is on the table |
|---|---|---|
| Bowel cancer that has spread to the liver | How much healthy liver would remain, rather than how many deposits there are. | Burning small deposits instead of cutting them, chemotherapy first, growing the remnant, or two operations months apart. |
| Primary liver cancer | The condition of the liver around the tumor. Cirrhosis, not tumor size, is usually the deciding factor. | Ablation for small tumors, transplantation where the liver itself is failing, and treatments delivered through the artery. |
| Bile duct cancer inside the liver | Whether a clear margin can be reached, which often means taking a whole side. | Growing the remnant first is common here because the required resection is large. |
| A benign tumor | Whether it needs treating at all, which is the real question and often the answer is no. | Watching it, stopping the oral contraceptive pill where relevant, or blocking its blood supply through a catheter. |
| A parasitic cyst | Cyst position and stage. Many never need an operation and are treated with drugs and drainage. | Puncture and drainage through the skin, catheter drainage, or drug treatment alone under observation. |
| Donating to somebody else | The donor's own safety, assessed to a standard no other liver operation is held to. | Waiting for a deceased donor organ, which is a decision belonging to the recipient's team. |
Will enough be left
This is the whole assessment, and it is done in five steps before anybody discusses dates.
The operation itself
Two to six hours, depending on how much is coming out and whether the abdomen is opened.
Growing the liver first
If the piece that would be left is too small, it can be made bigger before the operation, which is the part of liver surgery that most often surprises patients and the reason a first opinion of inoperable deserves a second one.
- A radiologist blocks the blood supply to the side coming out. A catheter is passed into the portal vein through the skin and the branch feeding the diseased side is plugged. Blood is diverted to the healthy side, which then grows.
- It works in almost everybody, and not everybody then gets an operation. Pooling 18 studies covering 607 patients, the procedure was technically successful in 99.3 percent and the remnant grew by an average of 49.4 percent, yet only 75.9 percent went on to resection. Major complications occurred in 3.13 percent.
- Growth speed predicts what happens next. In 107 patients, those whose remnant grew slower than 2 percent a week had liver failure in 21.6 percent and liver-related death within ninety days in 8.1 percent, against zero for both in those who grew faster. Growth rate mattered more than the final volume.
- Where that is not enough, an operation in two halves can be done. The liver is split and the blood supply divided at a first operation, the healthy side grows rapidly over one to two weeks, and the diseased side is removed at a second operation. A Scandinavian trial randomized 97 patients with a remnant under 30 percent, and 92 percent of that group completed both operations against 57 percent of those offered the conventional two-stage approach.
- And it is not free. In that trial serious complications occurred in 43 percent of both groups and death within ninety days was 8.3 percent against 6.1 percent, while longer follow-up of the same patients estimated median survival at 46 months against 26. This is a major undertaking offered to people whose alternative is no operation at all.
Keyhole or open
For removing deposits
Norwegian investigators randomized 280 patients having liver resection for bowel cancer deposits and found complications within thirty days in 19 percent after keyhole surgery against 31 percent after open, a difference of twelve percentage points with a confidence interval of 1.67 to 21.8. Hospital stay was 53 hours against 96. Blood loss, operating time and resection margins were no different, and there was no death in the keyhole group against one in the open group. A Spanish trial randomized 204 patients for the same indication and found overall complications of 11.5 percent against 23.7 percent, a hospital stay of 4 days against 6, and survival at five years of 49.3 percent against 47.4 percent with no significant difference. Two independent randomized answers pointing the same way is a stronger basis than most surgical questions have, and it settles the approach for this indication. What neither trial shows is any advantage in survival, which was equivalent in the Spanish comparison at five years, so the case for keyhole surgery here rests entirely on the fortnight afterwards, and that is a perfectly good reason on its own.
For removing a whole side
Taking half the liver by keyhole surgery is a much larger undertaking and it was tested separately. A European trial across 16 hospitals randomized 352 patients and analyzed 332, finding a median time to functional recovery of 4 days against 5, a difference of 17.5 percent with a confidence interval of 8.4 to 25.6. Major complications were 14.5 percent against 16.9 percent, an odds ratio of 0.84. Clear margins were achieved in 77.9 percent against 84.1 percent, an odds ratio of 0.60 that runs against the keyhole approach and is worth weighing. Patients started chemotherapy afterwards at a median of 46.5 days against 62.8. A separate analysis of quality of life in the same patients found better physical and social functioning and less pain and appetite loss in the keyhole group, with the largest difference on day ten and the effect still present at twelve months. Its authors were careful to note that all of this comes from experienced centers, which is a condition rather than a detail.
How much to take
The margin argument
Surgeons were long taught that a centimeter of clear liver around a deposit was required, and that rule drove many larger resections than were necessary. Pooling 34 studies covering 11,147 liver resections tested it. Having more than a millimeter of clear margin rather than less improved survival at every time point measured, which establishes that the margin matters. Having more than a centimeter rather than less also improved survival, with relative risks of 0.86 at three years, 0.91 at five and 0.94 at ten, and those numbers are drifting toward one as the follow-up lengthens. The honest reading is that a margin under a millimeter is genuinely worse, that a wider margin appears better still, and that neither finding justifies removing a large amount of healthy liver to achieve a centimeter when a smaller resection would leave you more reserve. Ask which of those two considerations is driving the plan in your case.
Taking segments or taking lumps
The related question is whether to remove whole anatomical segments or to take each deposit with a rim of liver around it and keep the rest. Pooling 18 studies covering 7,081 patients, of whom 56.1 percent had the parenchyma-sparing approach, overall survival gave a hazard ratio of 1.01 with a confidence interval of 0.94 to 1.08 and recurrence-free survival gave 1.00 with an interval of 0.94 to 1.07. Those are as close to identical as pooled results get. The larger operation cost more, with a relative risk of 2.27 for needing a transfusion and 1.39 for a postoperative complication, along with longer operating times and more blood loss. Sparing liver also leaves something to remove if the disease comes back, which is the argument that matters most and is hardest to put a number on. Ask which approach is planned and, if whole segments are being taken for a small deposit, ask what would be lost by taking less, because that is precisely the question the pooled numbers answer and the answer they give is that nothing measurable is lost.
What can go wrong
Liver resection carries a higher complication rate than most abdominal cancer operations, and the two problems specific to it get sections of their own below.
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| Problem | How common and when | What is done |
|---|---|---|
| Liver failure afterwards | 7.4 percent in a series of 214 resections, declaring itself around day five. | Supportive care and time. It is the complication that kills after this operation and it has its own section below. |
| Bile leaking from the cut surface | 10.2 percent in 411 hepatectomies, and 31 percent by the strictest definition of which most caused no trouble. | A drain, often placed at the operation. Some need endoscopic stenting and a few need reoperation. |
| Bleeding during the operation | During the division of liver tissue, and the reason this operation is done where blood is immediately available. | Technique, low central venous pressure and intermittent clamping. Transfusion carries its own consequences, covered below. |
| Collection of infected fluid | The first fortnight, often where a bile leak has been sitting undrained. | A drain placed under scan guidance and antibiotics. Reoperation is uncommon. |
| Chest problems and fluid around the lung | The first week, and commoner after a right-sided resection because of the diaphragm. | Breathing exercises, sitting up and walking. Occasionally a chest drain. |
| Death within ninety days | 6.5 percent in one series of 214, and reported at 6 percent across 807 resections in another. | The figure that most justifies asking about hospital volume, since it varies more with where the operation is done than with anything else. |
Liver failure afterwards
Every other complication on this page is survivable. This is the one that defines the risk of liver surgery, and understanding how it is recognized tells you what the team is watching for while you feel reasonably well.
Bile leak
Leaks are the commonest complication of liver surgery, usually manageable, and a good illustration of how a definition changes a number.
Cutting or burning
Small tumors can be destroyed with heat delivered through a needle rather than removed with a knife, and the comparison has now been tested properly in both of the diseases where it matters most.
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| Situation | What the randomized evidence shows | How to read it |
|---|---|---|
| Small bowel cancer deposits | In 300 patients with up to ten deposits each three centimeters or smaller, survival gave a hazard ratio of 1.05 with a confidence interval of 0.69 to 1.58. Adverse events were 19 percent against 46 percent. | The trial stopped early at a planned interim analysis. Survival curves had not reached their midpoint, so no median survival figure exists yet. |
| Serious complications from that comparison | 7 percent after ablation against 20 percent after resection, with no treatment-related deaths after ablation and three after surgery. | The safety difference is the clearest finding in the trial and the reason it changes practice for small deposits. |
| A single small primary liver cancer | In 180 patients with a solitary tumor of five centimeters or less, survival at four years was 67.9 percent after ablation against 64.0 percent after resection, with no statistical difference. | Nineteen of the ninety patients assigned to ablation withdrew, which weakens the comparison. Complications were more frequent and more severe after surgery. |
| Where the liver itself is failing | Transplantation replaces both the tumor and the diseased liver, and it is assessed by a transplant team against criteria that resection does not use. | This page found no reliable randomized comparison against resection. Anybody with cirrhosis and a liver tumor should be seen by a transplant team at least once. |
| Where a tumor sits next to a major vessel | Heat is carried away by flowing blood, which leaves tumor behind at the edge nearest the vessel. | Position, not just size, decides whether ablation is an option. Ask specifically where your deposits sit rather than only how big they are. |
Bowel cancer spread
Most liver resections in Europe are done for deposits from bowel cancer, and one long-running trial defines how chemotherapy fits around the operation.
Recovery and regrowth
Two things happen at once after this operation. You recover from abdominal surgery on the ordinary timetable, and your liver regrows on a much slower one.
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| When | You | Your liver |
|---|---|---|
| The first week | Out of bed on day one, eating within a day or two, daily blood tests, drains watched. Shoulder pain from the diaphragm is normal. | Around half its original volume after a major right-sided resection, and working hard. This is the vulnerable period. |
| Discharge | Five to eight days after a keyhole operation and longer after an open one. A recovery program shortened stay by 3.17 days across 7 randomized trials. | Already growing measurably. Blood tests that were abnormal in the first days are usually settling by now. |
| One month | Tiredness out of all proportion to what you did. Desk work becomes possible for many people around this point. | Roughly 64 percent of its original volume in living donors who gave a right lobe, and 76 percent in those who gave a left. |
| Three months | Most people are back to ordinary activity. Chemotherapy afterwards, where planned, has usually started. | Around 74 percent of original volume. Most of the regrowth happens in this first three months and then it slows sharply. |
| One year | Recovered, on surveillance scans, and thinking about the disease rather than the operation. | Around 81 percent of original volume, still slowly increasing. |
| Four years | No restrictions attributable to the liver in a healthy person. | Around 88 percent, and in that donor study never quite back to where it started. Function returns long before volume does. |
Flying home
Two to three weeks after a straightforward resection, and longer after a major one or if anything was complicated. The number is set by two specific things rather than by general caution. Liver failure declares itself around the fifth day and is recognized on blood tests taken before you feel unwell, so leaving before day six or seven removes the safety net entirely. And a bile leak often means going home with a drain, which is manageable and which needs a plan for who removes it and when.
Three things belong in the conversation before booking. Whether your clotting has fully normalized, since a liver that is still regenerating produces clotting factors more slowly and that affects both bleeding and clot risk on a long flight. Whether blood thinning injections continue and for how long, and whether your own oncologist has an appointment already, because chemotherapy afterwards has a window and it is the part of cross-border care that most often falls through.
Where you have it
Liver resection is among the operations where the choice of hospital moves outcomes more than any technical decision inside it.
Blood in the operating room
The liver receives around a quarter of the heart's output and cutting it is the bloodiest step in abdominal surgery, so everything about the technique is arranged around that fact, and the reason surgeons care so much is not only about the operating room.
Pooling 25 studies covering 10,621 patients having liver resection for bowel cancer deposits, receiving a blood transfusion went with an odds ratio of 1.98 for any complication, 4.13 for death, and a hospital stay longer by 4.43 days. Overall survival carried a relative risk of 1.24 and disease-free survival 1.38, both against the transfused group.
Every one of those studies was observational, so the association between transfusion and worse cancer outcomes cannot be separated from the fact that harder operations bleed more and harder operations do worse. It remains the reason a surgeon will spend an extra hour on careful division rather than working quickly. What is done about it is less settled than you might expect. A Cochrane review of ten randomized trials covering 657 patients found no significant difference in mortality or liver failure between the various ways of clamping the blood supply, and rated every included trial at high risk of bias. Keeping the pressure in the veins low during division, by careful anesthesia, is the other half of the answer, and a recent trial combining that with intermittent clamping in patients with cirrhosis reported shorter operations and lower inflammatory markers afterwards. None of that is a reason to refuse a transfusion you actually need, and it is a very good reason to ask whether the unit routinely uses low venous pressure anesthesia and intermittent clamping, because those are the two things that keep the number of people needing one down.
Lumps that are not cancer
Adenomas and hemangiomas
A great many liver lumps are found by accident on a scan done for something else and most of them need nothing at all, starting with hemangiomas, which are tangles of blood vessels and are left alone in the overwhelming majority of cases whatever their size. Adenomas are different, because a minority bleed and a minority change into cancer, and a size threshold is conventionally used to decide about removal. That threshold comes from clinical convention rather than from a measured risk, and this page could not verify a published bleeding rate or transformation rate by size, which is worth knowing if somebody quotes you one. There is also an option between watching and operating. A systematic review covering 851 patients found that blocking the tumor's blood supply through a catheter was used in 151 of them and avoided surgery in 45 percent, rising to 84 percent when it was done as a planned procedure rather than for bleeding, with major complications in 5.3 percent and no deaths. If you are a woman on the oral contraceptive pill with an adenoma, stopping it and rescanning is often the first step rather than an operation.
Parasitic cysts
Hydatid disease is common in Turkey and across the Mediterranean and Central Asia, and it is the one liver condition where surgery is often the wrong first answer. Many cysts are treated with drugs alone, or with puncture and drainage through the skin, and the stage of the cyst on ultrasound decides which. Where an operation is chosen, a Cochrane review of three randomized trials covering 180 adults and children found that a keyhole approach gave fewer minor complications with a relative risk of 0.13 and a hospital stay shorter by 1.90 days, with no deaths within thirty days in either group and recurrence too rare to compare meaningfully. Its authors rated the certainty of nearly every finding as very low and said firm conclusions could not be drawn from three small trials. The practical point stands regardless, which is that being offered an operation for a hydatid cyst without a discussion of drainage and drug treatment is a reason to ask for a second opinion.
If it comes back
Recurrence in the liver after a resection is common and it is not the end of surgical options, which is a fact that gets lost in the disappointment of the scan.
- A second liver resection is a real operation with real results. Pooling 34 studies covering 3,039 patients who had a repeat resection for recurrent bowel cancer deposits, survival at five years was 42 percent, with reported mortality of zero in most series and morbidity around 23 percent.
- Some features predict a worse result and none of them rule it out. In that analysis, more than one deposit carried a hazard ratio of 1.64, a deposit of five centimeters or more 1.85, a positive margin 2.25, and disease appearing within twelve months of the first operation 1.34.
- This is the strongest argument for sparing liver the first time. A patient who kept most of their liver at the first operation has options at the second, while one who had a formal half-liver resection for a single small deposit often has none, and that difference is decided years earlier by somebody who could not know it would matter.
- For primary liver cancer, burning competes with cutting again. A pooled analysis of twelve studies covering 1,746 patients found repeat resection gave better survival at three and five years than ablation, with fewer complications after ablation. That summary reported no effect sizes, so treat it as a direction rather than a quantity.
- And in hepatitis B, a tablet reduces recurrence. Across 2,198 patients in a Hong Kong territory-wide cohort, antiviral treatment carried a hazard ratio of 0.63 for recurrence, and 0.58 in the subgroup who had a resection. Overall mortality did not differ significantly. Anybody with hepatitis B having liver surgery should be on treatment.
Questions to ask
Six of these before the operation and the rest before you leave the hospital. All have short answers.
- What percentage of my liver will be left, and is the rest healthy? That figure exists in your file as a calculated number. Ask for it, and ask separately whether cirrhosis, fatty change or chemotherapy injury is present in the background liver.
- If the remnant is too small, what would you do? The answer should name blocking the portal vein or a two-stage operation. A first opinion of inoperable that has not considered either deserves a second opinion.
- Are you taking segments or sparing liver, and why? The pooled evidence shows equal survival and fewer complications with the sparing approach, and keeping liver leaves options if the disease returns.
- Could any of these be burned rather than cut? For deposits of three centimeters or less, a randomized trial found equivalent survival with adverse events of 19 percent against 46 percent. Position matters as much as size.
- How many liver resections does this unit do a year? A national analysis identified 76 a year as the threshold above which mortality fell significantly. Ask about the surgeon's personal number too.
- What is the plan for chemotherapy, and how many cycles before surgery? Chemotherapy delayed recurrence in the randomized trial and did not lengthen life, and it injures the liver, so the number of cycles should have a reason behind it.
- Before you leave, ask for four documents. The operation note naming exactly what was removed, the pathology report, the discharge summary, and a written follow-up plan naming who arranges the surveillance scans and at what interval.
Giving part of a liver
Living donation is the only major operation performed on somebody who has nothing wrong with them, it is held to a standard no other liver surgery is held to, and it also produced the volume data at the top of this page, because donors are the only people whose healthy livers get scanned repeatedly for years afterwards.
Across 246 living donations at seven Italian centers followed for a median of 112 months, there were no donor deaths. Complications of any kind occurred in 33.3 percent and serious complications in 12.6 percent, with 2.0 percent needing a further operation and 10.6 percent readmitted. Longer operations, lower blood pressure during surgery, vascular abnormalities and greater blood loss were the factors associated with problems.
One in eight is the figure that matters here, and a serious complication in an otherwise healthy person is a real risk that deserves to be stated plainly to anybody considering donating. Those authors wrote that the field should continue to strive for zero donor mortality and called for transparency in reporting, which is an unusually direct thing to find in a surgical paper. If you are considering donating, ask the center for its own donor complication figures rather than published averages, ask who advocates for you separately from the recipient's team, and take the time you need. Nobody should be hurried into this. Ask too what happens if you change your mind, and expect to be told that you can withdraw at any point up to the anesthetic without having to explain yourself, because a center that cannot say that clearly is not running the process properly.
Reading a quote
No figure appears on this page. Liver resection is the operation where a quoted number is least likely to be the number you pay, because the plan itself can change twice before you reach the operating room.
Seven things belong in writing. Which resection, named as a segment, a wedge or a hemihepatectomy, since these are different operations with different stays, and whether a preparatory procedure to grow the liver is included or billed separately, given that it happens weeks before and involves a different specialty. How many nights are budgeted and what an extra one costs, since a bile leak took the stay from 9 days to 16 in one series. Whether ablation performed at the same sitting is included, because combining the two is common. Whether pathology is inside the number. Whether treatment of a complication is covered, including a drain placed by a radiologist and a return to the operating room, and whether chemotherapy before or after is inside the quote, alongside it, or expected at home. A quote that answers all seven is usually from a unit that has thought the pathway through, and one that answers none of them has quietly moved the entire financial risk of a complication onto you.
Packages published by Turkish hospitals and medical travel agencies generally include the airport transfer, pre-operative testing, surgeon and anesthesia fees, the operating room, the planned nights, pathology, an interpreter and a review before departure, and generally exclude flights, insurance, chemotherapy, complications, extra nights, portal vein embolization and follow-up beyond the first weeks. Read what arrives against both lists rather than against the headline figure.
Coming to Istanbul
How long, and what to send
Eighteen to twenty-four days covers assessment, the operation and a safe departure for somebody arriving with staging complete, and considerably longer where the liver has to be grown first, since that adds a procedure and four to six weeks of waiting. Send the cross-sectional images themselves rather than only the reports, because liver volumes have to be calculated from the images and a written report cannot substitute. Send also any biopsy result, liver blood tests including bilirubin, albumin, clotting and platelets, hepatitis B and C results, tumor markers if done, a full list of chemotherapy already given with drug names and dates, your alcohol history honestly stated, your medication list, and details of any previous abdominal surgery. The chemotherapy history is the item most often left out and the one that most changes the assessment, because months of treatment injure the liver and reduce what can safely be removed. Say in your first message whether you have already been told the tumor is inoperable somewhere else, and if so send that opinion too, because knowing what has already been considered saves a great deal of time.
What is arranged, and afterwards
One coordinator holds your file from the first message to discharge, and the international patients team works in English, Arabic, French, Russian, Serbian, Romanian and Spanish, with other languages arranged on request. Ask in your first message if you would prefer a female physician. Someone can stay overnight with you on the ward, where the rooms carry a companion bed, meals cover halal, vegetarian and diabetic diets, and a prayer room is available. The international patients office books accommodation for both of you, arranges the airport transfer and daily transport, and prepares the appointment confirmation and the invitation letter naming the hospital and your treating doctor for a medical visa application, around ten days before travel. Follow-up after returning home should be agreed before you leave the ward, and it means a wound and blood test review at around two weeks, an oncology appointment inside six weeks where chemotherapy is planned, and surveillance scans at the interval your surgeon specifies with a named person arranging them. Leave with the operation note, the pathology report, the discharge summary and that written plan, and give all four to your own doctor together. Your coordinator stays reachable on the same WhatsApp number, so a question about a drain or a line in a report reaches somebody with your notes in front of them.
Liver resection FAQ
How much liver can be removed safely?
Does the liver really grow back?
I was told my tumor is inoperable. Is that final?
Is keyhole liver surgery as good as open?
Can my tumors be burned instead of cut out?
What is the most dangerous complication?
Should I have chemotherapy before the operation?
Does it matter where I have the operation?
Can I have a second liver operation if it comes back?
How long should I stay in Turkey?
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Editor's note
Written by the Biruni Hospital medical editorial team. Reviewed by Op. Dr. Nadi Nazım ÖZTÜRK, General Surgery.
Medically reviewed by

Op. Dr. Nadi Nazım ÖZTÜRK
General Surgery
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