Blog

Liver cancer is a type of cancer that starts in the cells of the liver. The liver is an important organ that helps the body digest food, store energy, remove harmful substances, and perform many other functions.

Liver cancer can develop for different reasons. Some people have a higher risk because of long-term liver disease, while others may develop it without a known cause. Knowing the risk factors and warning signs can help with early medical evaluation.

What Is Liver Cancer?

Liver cancer occurs when abnormal cells in the liver begin to grow and multiply uncontrollably.

There are different types of liver cancer. Hepatocellular carcinoma (HCC) is the most common type in adults and starts in liver cells called hepatocytes.

Cancer can also spread to the liver from another part of the body. This is called metastatic or secondary liver cancer and is different from cancer that begins in the liver.

What Are the Risk Factors for Liver Cancer?

Several conditions and lifestyle factors can increase the risk of developing liver cancer.

Chronic Hepatitis B or C

Long-term infection with hepatitis B or hepatitis C can damage the liver and increase the risk of liver cancer.

Regular medical care can help people with these infections manage their condition and monitor their liver health.

Cirrhosis

Cirrhosis occurs when long-term liver damage causes permanent scarring. It can result from several causes, including chronic viral hepatitis, excessive alcohol use, and certain other liver diseases.

People with cirrhosis have a higher risk of liver cancer.

Excessive Alcohol Use

Long-term heavy alcohol consumption can damage liver cells and increase the risk of cirrhosis and liver cancer.

Reducing alcohol intake or avoiding alcohol can help protect liver health.

Fatty Liver Disease

Metabolic conditions that cause fat to build up in the liver can sometimes lead to inflammation and liver damage. In some people, advanced liver disease can increase the risk of liver cancer.

Family History

Having certain liver diseases or a family history of liver cancer may increase a person's risk.

However, having a family member with liver cancer does not mean that a person will definitely develop the disease.

What Are the Symptoms of Liver Cancer?

Early liver cancer may not cause noticeable symptoms. When symptoms appear, they may include:

• Unexplained weight loss

• Loss of appetite

• Feeling full after eating only a small amount

• Persistent tiredness or weakness

• Pain or discomfort in the upper right side of the abdomen

• A lump or feeling of fullness below the ribs

• Nausea or vomiting

• Yellowing of the skin or eyes

• Swelling in the abdomen or legs

• Dark urine or pale stools

These symptoms can have many causes and do not necessarily mean that someone has liver cancer.

However, persistent or unexplained symptoms should be evaluated by a healthcare professional.

Why Can Liver Cancer Be Difficult to Detect Early?

The liver can continue performing many of its functions even when it is affected by disease. As a result, early liver cancer may not cause obvious symptoms.

People who already have chronic liver disease may have regular checkups that can help doctors identify changes earlier.

If you have a condition that increases your risk of liver cancer, ask your healthcare professional whether regular monitoring is appropriate.

How Is Liver Cancer Diagnosed?

Doctors usually use a combination of medical history, physical examination, blood tests, and imaging to investigate possible liver cancer.

Blood Tests

Blood tests can provide information about liver function. Doctors may also check a substance called alpha-fetoprotein (AFP).

AFP can be higher in some people with liver cancer, but it is not a perfect test. An elevated AFP level does not always mean cancer, and some people with liver cancer may have normal AFP levels.

Ultrasound

An ultrasound uses sound waves to create images of the liver. It may help doctors identify an abnormal area or mass.

CT or MRI Scans

A CT scan or MRI can provide more detailed images of the liver. These tests can help doctors examine a suspicious area and determine its size and location.

Liver Biopsy

In some cases, a biopsy may be needed. During a biopsy, a small sample of tissue is removed and examined under a microscope.

A biopsy is not always necessary. Doctors may be able to diagnose certain liver cancers using imaging and other information.

What Happens After a Liver Cancer Diagnosis?

If liver cancer is confirmed, doctors may perform additional tests to determine the extent of the disease.

This is known as staging.

The stage helps doctors understand the size and location of the tumor, whether blood vessels are involved, and whether the cancer has spread to other parts of the body.

Staging information helps the medical team choose an appropriate treatment plan.

Can Liver Cancer Be Prevented?

Not every case of liver cancer can be prevented, but certain steps can lower the risk.

Helpful measures include:

• Getting vaccinated against hepatitis B when recommended

• Preventing hepatitis C infection and getting tested when appropriate

• Avoiding excessive alcohol use

• Maintaining a healthy weight

• Managing diabetes and other metabolic conditions

• Following treatment for chronic liver disease

• Avoiding exposure to harmful substances that can damage the liver

People with chronic liver disease should follow their healthcare professional's recommendations for regular monitoring.

FAQs

What is the most common type of liver cancer?

Hepatocellular carcinoma, also called HCC, is the most common primary liver cancer in adults.

What is the biggest risk factor for liver cancer?

Chronic liver damage, particularly cirrhosis and long-term hepatitis B or C infection, is an important risk factor.

What are the early symptoms of liver cancer?

Early liver cancer may not cause symptoms. When symptoms occur, they can include loss of appetite, unexplained weight loss, tiredness, and discomfort in the upper right abdomen.

Can a blood test diagnose liver cancer?

Blood tests can provide useful information and may measure AFP, but blood tests alone usually cannot confirm liver cancer.

Is liver cancer always caused by alcohol?

No. Alcohol is only one possible risk factor. Chronic viral hepatitis, cirrhosis, fatty liver disease, and other factors can also contribute to liver cancer.

Conclusion

Liver cancer begins in the cells of the liver and can develop for several reasons. Chronic hepatitis B or C, cirrhosis, excessive alcohol use, and certain forms of fatty liver disease can increase the risk.

Early liver cancer may not cause clear symptoms. Later signs can include weight loss, loss of appetite, abdominal discomfort, swelling, and yellowing of the skin or eyes.