Liver Metastasectomy - Liver Metastasis Surgery

Liver metastasectomy removes cancer that has spread to the liver while keeping enough healthy liver to work. For small tumors, burning them through a needle now matches surgery.

Liver metastasis surgery treats cancer that has traveled to the liver from another organ, with the colon and rectum as the commonest source. The surgeon removes each tumor with a margin of healthy tissue, from a small wedge to half of the liver, and the remaining liver regrows within weeks. This page explains who is a candidate, how a small liver remnant is made to grow, when the bowel and liver are operated on together, how keyhole surgery and ablation compare, what follows the operation, and what to send for a free review of your scans.

What the operation removes

Surgery aims to leave no visible tumor behind.

The liver regrows within weeks, so up to two thirds of a healthy liver can be removed.

The extent of the resection follows the number, size and position of the tumors. Each of the eight liver segments has its own artery, vein and bile duct, so the surgeon can take one segment and leave its neighbors working. Margins matter. The aim is clear margins around every tumor with the least liver lost, because the liver that stays has to carry the body through recovery and any later treatment.

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Who is a candidate

Every tumor must come out, and enough healthy liver must stay behind.

• Metastases from colon or rectal cancer, the largest group
• Neuroendocrine tumors that have spread to the liver
• Selected metastases from breast, kidney or stomach cancer or melanoma, after tumor board review
• No cancer outside the liver, or a small amount that can also be treated
• Fitness for a major operation

Scans come first. Contrast CT, a liver-specific MRI and a PET-CT map every tumor before the decision. The MRI finds small tumors that CT misses. Metastases from other cancers are judged one by one, because the benefit of removing them depends on how the cancer behaves elsewhere in the body and how long it stayed quiet after the first treatment.

When the liver needs to grow first

A healthy liver works with a fifth of its volume left. After heavy chemotherapy it needs closer to a third. When the planned remnant is too small, the surgeon makes it grow before the main operation. Blocking the portal vein to the side that will be removed sends the blood flow to the side that stays. Adding a block of the hepatic vein, called liver venous deprivation, gave a larger remnant and faster growth than portal vein embolization alone across nine studies and 557 patients, with no difference in complications.

Bowel and liver together or in stages

Simultaneous or staged

When bowel cancer and liver metastases are found together, both can come out in one operation or in two. Across 11 matched and prospective studies with 2,884 patients, five-year survival did not differ. Major complications were more frequent after simultaneous resection, with an odds ratio of 1.32.

Which goes first

A network analysis of 46 studies and 20,991 patients found shorter hospital stays and more complete clearance with simultaneous surgery, and less complete clearance when the liver went first. It depends. The tumor board weighs the size of both operations, your fitness and the urgency of each tumor, and a small liver resection with a routine bowel operation suits a combined approach far better than a major liver resection with a low rectal one.

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Keyhole surgery and ablation

In randomized trials, keyhole liver resection gave the same five-year survival as open surgery, a risk ratio of 1.04, with fewer serious complications and a hospital stay shorter by 6.6 days. Recovery is faster. Parenchyma-sparing surgery removes each tumor with a margin and keeps as much liver as possible, which leaves room for a repeat operation later.

In the COLLISION trial, 300 patients with up to ten metastases of 3 centimeters or less were randomized to thermal ablation or resection. Survival was the same, a hazard ratio of 1.05. Adverse events fell from 46 to 19 percent with ablation, and serious ones from 20 to 7 percent. Three patients died after resection and none after ablation. Ablation suits tumors deep in the liver or close to large vessels only when a safe margin can be burned, and surgery stays the choice for larger tumors and those next to the main bile ducts, so the radiologist and the surgeon review every lesion together before the plan is fixed.

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Small tumors no longer always need a scalpel.

After surgery

In 239 patients from the OSLO-COMET trial, five-year survival after resection ran from 39 to 62 percent depending on how the tumor grew at its edge, a pattern the pathologist reads under the microscope. Cancer returned after a median of 9 to 31 months. Liver tissue regrows, so a recurrence confined to the liver can be removed or ablated again.

Transplantation for liver metastases

Who is assessed

For highly selected patients whose metastases cannot be removed, the transplant team assesses liver transplantation.

What the evidence shows

A review of 17 studies found better survival after transplantation than after the best alternative treatment, a hazard ratio of 0.45, with five-year survival reaching 83 percent after strict selection. Selection is everything. The result rests on one randomized trial. Cancer returned in 72 to 81.5 percent, and one in ten patients evaluated went on to a transplant.

Your time in Istanbul

One published Istanbul offer for liver metastasectomy, at Memorial Atasehir, lists the resection and a personal coordinator, with airfare excluded. Expect five to seven nights on the ward after open surgery, fewer after keyhole surgery. Plan two weeks in the city.

1. Day one, CT, liver MRI, blood tests and liver function tests
2. Day two, tumor board review and consent
3. Day three, surgery
4. Ward days, walking, eating and blood tests until discharge
5. Before the flight, the pathology report and a plan for chemotherapy and scans at home

Plans differ by patient. One coordinator runs the trip from your first WhatsApp message and stays on the same number once you are home, and English, Arabic, French, Russian, Serbian, Romanian and Spanish are covered by our team, and an interpreter joins for anything else. A relative stays with you each night on the companion bed. The international patients office books the hotel around the admission, meets you at the airport and drives you to every appointment. A female surgeon is assigned on request wherever the rota allows. Halal, vegetarian and diabetic meals come from the hospital kitchen. There is a prayer room. The visa invitation letter leaves ten days before travel. A healing abdominal wound rules out heavy luggage, so the coordinator books help and a wheelchair at both airports, and on the plane you walk the aisle every hour against clots. Back home, your oncologist receives the pathology report and the treatment plan in English, and the surgeon reviews your recovery and the first scans by video call.

Call us the same day for fever, yellowing of the skin or eyes, a swelling abdomen, rising pain, or calf or chest pain.

What the cost depends on

Cost depends on the extent of the resection, keyhole or open surgery, ablation, any embolization beforehand, a combined bowel operation and the nights in hospital and intensive care. A firm figure follows the tumor board review of your scans, which is free. It arrives in writing. The table below shows which choices move the figure, and the written quote lists every item it covers.

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Liver metastasis surgery FAQ

Send the images on a download link or disc, since reports alone do not show every tumor.

References

1. van der Lei S, Puijk RS, Dijkstra M, et al. Thermal ablation versus surgical resection of small-size colorectal liver metastases (COLLISION): an international, randomised, controlled, phase 3 non-inferiority trial. Lancet Oncol. 2025;26(2):187-199.
2. Ozair A, Collings A, Adams AM, et al. Minimally invasive versus open hepatectomy for the resection of colorectal liver metastases: a systematic review and meta-analysis. Surg Endosc. 2022;36(11):7915-7937.
3. Drejian S, Akhavi MS, Grzyb K, et al. Histopathologic growth patterns as prognostic factor for survival in patients with colorectal liver metastases. Radiol Oncol. 2026;60(1):114-123.
4. Lakha AS, Sud V, Alemour Y, et al. Simultaneous versus delayed resection of synchronous colorectal liver metastases: a systematic review and meta-analysis. Eur J Surg Oncol. 2025;51(5):109732.
5. Sijberden JP, Alvarez Escribano MS, Kasai M, et al. Perioperative safety and oncological efficacy of simultaneous versus colorectal and liver first two-staged resections in patients with synchronous colorectal liver metastases: a systematic review and network meta-analysis. HPB (Oxford). 2025;27(2):135-149.
6. Chaouch MA, Mazzotta A, da Costa AC, et al. A systematic review and meta-analysis of liver venous deprivation versus portal vein embolization before hepatectomy: future liver volume, postoperative outcomes, and oncological safety. Front Med (Lausanne). 2024;10:1334661.
7. Valagni G, Pereira RA, Lenz G, Barcellos G, de Castria TB. Liver transplantation for unresectable colorectal liver metastases: a systematic review and meta-analysis of survival outcomes. Clin Colorectal Cancer. 2026. doi:10.1016/j.clcc.2026.09.002.