Liver Cancer Stages and Classification

This is the seventh page in the Understanding Liver Cancer Guide. This guide was developed by the HealthTree Education Team and was last updated and reviewed on June 20, 2026.

Doctors use the term stage to describe how far cancer has grown and whether it has spread to other parts of the body. Knowing the stage of your cancer helps your care team plan the best treatment and gives some information about what to expect.

Liver cancer is unique in that staging must take into account not only the size and spread of the tumor but also the function of the rest of the liver. This is because most people with liver cancer also have underlying liver disease that affects what treatments are possible and what outcomes are likely.

The Barcelona Clinic Liver Cancer Staging System

The most widely used staging system for hepatocellular carcinoma in the United States and Europe is called the Barcelona Clinic Liver Cancer system, commonly known as BCLC. This system is preferred because it combines information about the tumor with information about liver function and the patient's overall health to guide treatment decisions. The BCLC system divides patients into stages from 0 to D.

BCLC Stage 0: Very early stage

A single tumor that is smaller than 2 centimeters. Liver function is well preserved. The patient is in good general health. Curative treatments including surgery or ablation are the goal.

BCLC Stage A: Early stage

A single tumor of any size, or up to three tumors each 3 centimeters or smaller. Liver function is preserved or mildly reduced. The patient is in good general health. Curative treatments including surgery, liver transplant, and ablation are options.

BCLC Stage B: Intermediate stage

Multiple tumors that do not involve the major blood vessels and have not spread outside the liver. Liver function is reasonably well preserved. The patient is in good general health. Treatment focuses on controlling tumor growth with procedures that target the liver directly, such as transarterial chemoembolization.

BCLC Stage C: Advanced stage

Cancer has spread to the blood vessels inside the liver, to nearby lymph nodes, or to distant organs. Or the patient's general health has declined. Systemic treatments such as targeted therapy and immunotherapy are used.

BCLC Stage D: Terminal stage

Liver function is very poor. The patient's general health is significantly reduced. Curative or life-prolonging treatment is generally not possible, and the goal of care shifts entirely to comfort and quality of life.

The TNM Staging System

The American Joint Committee on Cancer, known as AJCC, uses the TNM system to stage liver cancer. TNM stands for Tumor, Nodes, and Metastasis. This system describes the size and extent of the primary tumor, whether cancer has spread to lymph nodes, and whether it has spread to distant organs. The TNM system assigns a stage from I to IV.

• Stage I: A single tumor without invasion of nearby blood vessels. Stage IA is a tumor smaller than 2 centimeters. Stage IB is a tumor 2 centimeters or larger.
• Stage II: A single tumor with invasion into blood vessels, or multiple tumors all smaller than 5 centimeters.
• Stage IIIA: Multiple tumors, at least one of which is larger than 5 centimeters.
• Stage IIIB: The tumor has grown into a major branch of the portal or hepatic vein.
• Stage IVA: Cancer has spread to nearby lymph nodes.
• Stage IVB: Cancer has spread to distant organs such as the lungs or bones.

Milan Criteria and liver transplant eligibility

For patients being considered for liver transplantation, a set of rules called the Milan Criteria is commonly used to determine eligibility. The Milan Criteria allow transplant for patients with a single tumor up to 5 centimeters, or up to three tumors each no larger than 3 centimeters, with no spread to blood vessels or distant organs. Some transplant centers also use expanded criteria that allow transplant for selected patients with slightly larger tumors.

Child-Pugh classification and liver function

Because liver function is so important in liver cancer care, doctors regularly assess it using a scoring system called the Child-Pugh classification. This system gives a score based on five factors: bilirubin level, albumin level, clotting time, presence of fluid in the abdomen, and the degree of any mental confusion related to liver disease. Patients are classified as Child-Pugh A, B, or C, with A indicating the best preserved function and C the most severely reduced function. Child-Pugh class affects which treatments are safe and appropriate.

Recurrent liver cancer

Liver cancer can return after initial treatment. When it does, doctors assess the location and extent of recurrence and the current state of the patient's liver function before recommending next steps. Recurrence may be:

• Local recurrence. Cancer returns in the same part of the liver where it was originally treated
• Intrahepatic recurrence. Cancer returns elsewhere in the liver
• Extrahepatic recurrence. Cancer returns in lymph nodes or distant organs outside the liver