What is a Hepatectomy
A liver resection removes the disease — not the organ.
Hepatectomy (also called liver resection) is the surgical removal of a diseased part of the liver — most often a tumour — while the healthy remainder is left in place to keep working. It is not the same as a liver transplant: nothing is replaced, there is no donor to match, and no lifelong anti-rejection medication is needed. The patient's own remaining liver simply takes over.
What makes this possible is the liver's structure. Surgeons think of it in eight functional units called Couinaud segments, each with its own blood supply and drainage. By mapping exactly which segments the tumour occupies, a hepatobiliary surgeon can remove only those segments — a wedge, a single segment, an entire lobe, or occasionally more — along clean anatomical planes, while sparing everything else.
The liver's other remarkable property is regeneration. Unlike any other solid organ, it can regrow. In a patient with healthy liver function, up to around 70% of the liver can be safely removed, and the remaining tissue typically rebuilds to close to its original volume within 6 to 8 weeks. This is what makes hepatectomy such a powerful, organ-preserving option for liver cancer, metastases, and benign liver tumours. Where the liver's remaining function is too limited for resection to be safe, a liver transplant may be the better path instead.
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Liver-sparing precision — surgeons remove only the diseased segments, mapped against the liver's 8 functional units, preserving healthy tissue.
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Remarkable regeneration — the remaining liver typically regrows to near-full volume within 6–8 weeks after surgery.
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Open, laparoscopic or robotic — minimally invasive approaches are used whenever the tumour's location allows, shortening recovery significantly.
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Not a transplant — your own liver tissue does the work; no donor matching, no waiting list, no anti-rejection drugs.