Surgery to remove a liver cancer tumor, known as a partial hepatectomy or liver resection, is one of the main potentially curative treatments for selected patients with primary liver cancer. During the procedure, the surgeon removes the part of the liver containing the tumor along with an appropriate margin of surrounding tissue, while preserving as much healthy liver as possible.
*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.
However, not every liver tumor can or should be removed surgically. The decision depends on the type and extent of the cancer, its location within the liver, the condition of the remaining liver, and the person's overall health. Understanding liver cancer treatment therefore requires looking at both the tumor and the liver as a whole.
What Is Liver Cancer Resection?
Liver resection is an operation in which the surgeon removes the portion of the liver containing the cancer. Depending on where the tumor is located and how much liver needs to be removed, the operation can range from removing a small wedge or segment to removing a larger section or an entire lobe.
The aim is to remove all visible cancer while leaving enough healthy, functioning liver behind. The liver has an unusual ability to regenerate after part of it has been removed. However, this does not mean that any amount of liver can be safely removed. The remaining liver must have sufficient blood supply, bile drainage and functional reserve to support the body after surgery.
When Can a Liver Tumor Be Removed Surgically?
Surgery is most suitable when the cancer is localized and can be completely removed without leaving an inadequate amount of functioning liver. For hepatocellular carcinoma (HCC), surgeons typically consider several factors together:
- The number and size of tumors
- The location of the tumor within the liver
- Whether major blood vessels are involved
- Whether the cancer has spread outside the liver
- How well the liver is functioning
- Whether cirrhosis or portal hypertension is present
- The person's general health and ability to undergo major surgery
Why Does Liver Function Matter So Much?
One of the most important differences between liver cancer surgery and surgery for many other solid tumors is that the organ containing the cancer may already be diseased.
HCC frequently develops in a liver affected by cirrhosis or another chronic liver condition. If too much liver tissue is removed from a person with limited liver reserve, the remaining liver may not be able to perform its functions adequately. Before recommending resection, doctors may therefore assess:
- Liver blood tests
- Bilirubin and albumin levels
- Blood-clotting function
- Presence of ascites
- Evidence of portal hypertension
- Severity of cirrhosis
- Overall liver reserve
The goal is not simply to determine whether the tumor can technically be removed. It is to determine whether the cancer can be removed safely while leaving enough functioning liver behind.
How Do Surgeons Decide How Much Liver to Remove?
The extent of surgery depends largely on the tumor's size, position and relationship with important blood vessels and bile ducts.
A small tumor located within a limited portion of the liver may require only a small resection. A tumor involving a larger anatomical section may require removal of an entire lobe or a more extensive portion of the liver.
Before surgery, CT or MRI scans are used to map the tumor and the liver's blood vessels and bile ducts. Surgeons can then plan which part of the liver needs to be removed and estimate the volume and function of the liver that will remain.
In some complex cases, additional techniques may be considered to increase the amount of functioning liver available after surgery. These decisions are highly individualized and depend on the patient's anatomy and liver condition.
What Are the Main Types of Liver Resection?
The terminology can sound complicated, but it essentially describes how much of the liver is removed.
*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.
Wedge or Limited Resection
A wedge resection removes the tumor with a small surrounding portion of liver tissue. It may be suitable for tumors that can be safely removed without sacrificing a large amount of healthy liver.
Segmentectomy
A segmentectomy removes one or more anatomical segments of the liver containing the tumor. This approach can allow the surgeon to remove the cancer while preserving a greater amount of healthy liver in selected patients.
Lobectomy
A lobectomy removes an entire anatomical lobe of the liver. The liver is divided into right and left anatomical sections, although the exact operation depends on the tumor's location and the surgical plan.
Extended Resection
Some tumors require removal of a larger portion of the liver because of their size, location or relationship with surrounding structures. Such operations require particularly careful assessment of the remaining liver.
What Happens Before Liver Cancer Surgery?
Surgical planning begins well before the operation itself. The medical team first confirms the diagnosis and stages the cancer. Imaging is used to determine the number and location of tumors, vascular involvement and whether there is evidence of spread outside the liver.
The condition of the liver is assessed at the same time. In people with cirrhosis, the presence of portal hypertension and the degree of liver dysfunction can substantially influence whether resection is considered safe.
The surgical team may also evaluate the heart, lungs, nutritional status and other health conditions to determine whether the person is fit for major surgery.
How Is Liver Tumor Removal Performed?
Liver resection is performed under general anesthesia. The surgeon accesses the liver and carefully identifies the tumor, blood vessels and bile ducts involved in the planned resection.
The diseased portion of the liver is then separated from the remaining liver while controlling blood vessels and bile ducts. The tumor is removed with the planned margin of surrounding liver tissue, and the remaining liver is checked for bleeding or bile leakage before the operation is completed.
Depending on the case and the surgeon's assessment, liver resection may be performed through an open operation or, in selected patients, using minimally invasive techniques such as laparoscopic or robotic surgery.
Minimally invasive approaches are not suitable for every tumor. Tumor location, size, number of lesions, previous abdominal surgery, liver condition and the complexity of the required resection all influence the choice of surgical approach.
What Is the Purpose of Removing a Margin Around the Tumor?
The surgeon generally removes some surrounding liver tissue along with the tumor rather than cutting directly through the visible cancer.
The aim is to achieve a complete cancer removal while preserving as much healthy liver as safely possible. The appropriate margin depends on the tumor, anatomy and surgical strategy; a larger margin is not automatically better if removing additional liver tissue creates unnecessary risk.
The removed tissue is examined by a pathologist after surgery. The final pathology provides important information about the tumor and whether the surgical margins are free of cancer.
What If the Tumor Is Too Close to a Major Blood Vessel?
The relationship between the tumor and major blood vessels is an important part of surgical planning. A tumor near a major vessel is not automatically unresectable. In selected cases, surgeons may be able to remove the tumor while preserving or reconstructing the involved vascular structures.
However, extensive vascular involvement can make complete removal technically difficult or unsafe. The decision depends on the exact anatomy, the extent of vascular involvement and whether sufficient functioning liver can remain after surgery.
Can Liver Cancer Surgery Be Done If the Patient Has Cirrhosis?
Sometimes, but cirrhosis changes the risk assessment. People with well-compensated cirrhosis and adequate liver reserve may be considered for resection in carefully selected circumstances.
Significant liver dysfunction or portal hypertension can increase the risk of postoperative liver failure and may make transplantation or another treatment more appropriate. This is why the same tumor may be treated with resection in one person and transplantation, ablation or another approach in another.
Liver Resection vs Liver Transplant: What Is the Difference?
Both can have a potentially curative role in appropriately selected HCC patients, but they address the liver differently.
| Feature | Liver Resection | Liver Transplantation |
|---|---|---|
| What is removed? | The portion of liver containing the tumor | The entire diseased liver |
| Underlying liver | Requires enough healthy liver to remain | Replaces the diseased liver |
| Particularly useful when | The tumor can be removed safely and liver function is adequate | HCC is appropriately selected for transplantation and underlying liver disease makes resection unsuitable or less appropriate |
| Donor organ required? | No | Yes |
Transplantation can have the additional advantage of removing both the tumor and the underlying cirrhotic liver, but donor availability and strict selection criteria limit its use.
What If Surgery Cannot Remove the Tumor?
Surgery is only one treatment option for liver cancer. If a tumor cannot be safely resected, other approaches may still be possible. Depending on the tumor and liver condition, alternatives can include:
- Tumor ablation
- Transarterial chemoembolization or other liver-directed procedures
- Radiation therapy
- Liver transplantation in appropriately selected patients
- Systemic treatment such as immunotherapy or targeted therapy
What Is Recovery Like After Liver Cancer Surgery?
Recovery depends on how much liver has been removed, the surgical approach, the person's underlying liver function and whether complications occur.
Immediately after surgery, patients are monitored closely for bleeding, infection, bile leakage, liver function and other complications. Pain control, breathing exercises and gradual movement are important parts of recovery.
Eating usually resumes gradually as tolerated, and activity is increased progressively. A larger liver resection generally requires a longer recovery than a smaller operation.
*AI-generated image - for illustration only. Clinical accuracy is not guaranteed.
Although the liver can regenerate after a partial hepatectomy, recovery of liver volume and full physical recovery are not necessarily the same thing. The body may require several weeks or longer to return to normal activity, depending on the extent of surgery.
What Are the Risks of Liver Tumor Removal?
Liver resection is major surgery, and complications can occur even when the procedure is carefully planned. Potential complications include:
- Bleeding
- Infection
- Bile leakage
- Blood clots
- Fluid accumulation
- Temporary or prolonged changes in liver function
- Liver failure in severe cases
- Complications related to anesthesia or other medical conditions
The risk is influenced by the amount of liver removed, the condition of the remaining liver, the complexity of the operation and the patient's overall health.
Can Liver Cancer Come Back After Surgery?
Yes. Removing the visible tumor does not eliminate the possibility of recurrence. HCC can recur within the liver or, less commonly, in other parts of the body. Recurrence can occur because microscopic cancer cells were already present but could not be detected at the time of surgery, or because a new HCC develops in a liver that remains affected by chronic disease.
For this reason, surgery is followed by regular surveillance. Follow-up commonly includes imaging and blood tests at intervals determined by the treating team.
Recurrence does not automatically mean that treatment is no longer possible. Depending on where and how the cancer returns, options may include another resection, ablation, transplantation, liver-directed treatment, radiation or systemic therapy.
Can Surgery Cure Liver Cancer?
For carefully selected patients with localized HCC, complete surgical removal can be performed with curative intent. However, surgery cannot guarantee that the cancer will never return.
The likelihood of long-term control depends on factors such as tumor stage, vascular invasion, tumor biology, the condition of the underlying liver and whether the tumor was completely removed.
Current clinical guidance considers surgical resection one of the potentially curative treatments for selected early or localized HCC, alongside transplantation and ablation in appropriate patients.
The Bottom Line
Liver surgery to remove a tumor can offer a potentially curative treatment for selected patients, particularly when the cancer is localized and the liver has enough functional reserve to tolerate the operation.
The goal is not simply to remove as much liver as possible. Surgeons aim to remove the cancer completely while preserving enough healthy liver to maintain normal function. This requires careful assessment of the tumor's location, blood-vessel involvement, the amount of liver that would remain, and the condition of the liver itself.
When resection is not appropriate, other treatments—including ablation, transplantation, liver-directed procedures, radiation and systemic therapy—may still be available. The most suitable approach therefore depends on the individual cancer and the liver in which it has developed.
