Liver Cancer: Symptoms, Causes, Diagnosis and Treatment – Understanding the Warning Signs

The liver is one of the most important organs in the human body. It performs several essential functions, including filtering toxins from the blood, supporting digestion, storing nutrients and helping regulate metabolism.

However, like any other organ, the liver can develop cancer.

One of the concerning aspects of liver cancer is that it may develop silently, particularly during its early stages. Some patients may not experience noticeable symptoms until the disease has progressed.

As an oncologist, I believe that understanding the warning signs, recognising risk factors and seeking timely medical evaluation are essential steps towards better cancer care.

Liver cancer is a serious condition, but advances in diagnostic techniques and treatment have created more options for patients. Early identification can help doctors assess the disease and determine the most appropriate treatment approach.

In this article, I will explain what liver cancer is, its symptoms, possible causes, diagnostic procedures and available treatment options.

What Is Liver Cancer?

Liver cancer occurs when abnormal cells in the liver begin to grow uncontrollably and form a malignant tumour.

The most common type of primary liver cancer in adults is hepatocellular carcinoma (HCC), which develops from the main liver cells called hepatocytes.

Another type is intrahepatic cholangiocarcinoma, which develops from the bile ducts within the liver.

It is also important to understand the difference between primary and secondary liver cancer.

• Primary liver cancer: Cancer that originates in the liver.
• Secondary liver cancer: Cancer that begins in another organ and spreads to the liver.

The distinction is important because the diagnosis and treatment strategy can differ considerably.

Liver Cancer Symptoms: Warning Signs You Should Not Ignore

Early-stage liver cancer may not produce obvious symptoms. In some individuals, the disease is discovered during routine monitoring for an existing liver condition.

As the disease progresses, certain symptoms may become noticeable.

1. Persistent Pain in the Upper Abdomen

One of the possible symptoms of liver cancer is persistent discomfort or pain in the upper abdomen, particularly on the right side, where the liver is located.

The pain may sometimes extend towards the back or right shoulder.

Although abdominal pain can occur due to several digestive and liver-related conditions, persistent or unexplained discomfort deserves medical attention.

2. Jaundice

Jaundice causes the skin and the whites of the eyes to appear yellow.

It develops when bilirubin, a yellow pigment produced during the breakdown of red blood cells, accumulates in the body.

In patients with liver cancer, jaundice may occur due to impaired liver function or obstruction of bile flow.

Jaundice should always be medically evaluated, as it can have several possible causes.

3. Loss of Appetite and Unexplained Weight Loss

Some individuals with liver cancer experience reduced appetite and unintended weight loss.

This may happen because cancer can affect metabolism, appetite and the body’s ability to maintain normal nutritional balance.

Unexplained weight loss, especially when accompanied by other symptoms, should not be ignored.

4. Persistent Fatigue and Weakness

Feeling unusually tired or weak despite adequate rest can sometimes be associated with liver cancer.

Fatigue may result from changes in liver function, inflammation, nutritional deficiencies or the overall effects of cancer on the body.

Persistent fatigue requires evaluation, particularly when accompanied by other unexplained symptoms.

5. Abdominal Swelling

Some patients develop swelling or an increase in abdominal size due to the accumulation of fluid inside the abdominal cavity, a condition known as ascites.

Ascites can occur when liver function becomes significantly impaired or due to other complications associated with liver disease and cancer.

A newly developed or progressively increasing abdominal swelling should be investigated.

6. Nausea and Vomiting

Some patients experience nausea, vomiting or a persistent feeling of discomfort after eating.

These symptoms are not specific to liver cancer and can occur in many other medical conditions.

However, persistent digestive symptoms accompanied by other warning signs deserve medical attention.

7. Easy Bruising or Bleeding

The liver produces several proteins that help blood clot normally.

When liver function becomes significantly impaired, some individuals may experience easy bruising or increased bleeding.

These symptoms can also have other causes and require appropriate medical assessment.

Important: Experiencing one or more of these symptoms does not necessarily mean that a person has liver cancer. However, persistent, unexplained or progressively worsening symptoms should always be evaluated by a healthcare professional.

What Causes Liver Cancer?

Liver cancer does not always have one identifiable cause. However, several medical conditions and lifestyle-related factors can increase the risk of developing the disease.

1. Chronic Hepatitis B Infection

Long-standing infection with the hepatitis B virus (HBV) is an important risk factor for liver cancer.

Chronic hepatitis B can cause ongoing liver inflammation and increase the risk of hepatocellular carcinoma.

Importantly, liver cancer can develop in people with chronic hepatitis B even without established cirrhosis.

Vaccination against hepatitis B is an important preventive measure.

2. Chronic Hepatitis C Infection

Hepatitis C virus (HCV) can cause long-term inflammation and damage to the liver.

Over time, chronic infection may lead to fibrosis and cirrhosis, significantly increasing the risk of liver cancer.

Modern antiviral treatments can cure hepatitis C in most patients, helping reduce future liver-related complications.

3. Liver Cirrhosis

Cirrhosis refers to advanced scarring of the liver caused by long-standing liver damage.

It is one of the most important risk factors for hepatocellular carcinoma.

Cirrhosis can develop due to chronic viral hepatitis, alcohol-related liver disease, metabolic dysfunction-associated steatotic liver disease and other conditions.

Patients with cirrhosis generally require regular surveillance for liver cancer.

4. Fatty Liver Disease and Obesity

Metabolic dysfunction-associated steatotic liver disease (MASLD), previously commonly referred to as non-alcoholic fatty liver disease, is increasingly recognised as an important liver health concern.

In some individuals, fatty liver disease can progress to inflammation, fibrosis and cirrhosis.

Obesity, type 2 diabetes and metabolic syndrome can further increase the risk of advanced liver disease and liver cancer.

5. Excessive Alcohol Consumption

Long-term excessive alcohol consumption can damage liver cells and lead to inflammation, fibrosis and cirrhosis.

People with alcohol-related cirrhosis have an increased risk of developing liver cancer.

Avoiding excessive alcohol consumption is an important part of maintaining liver health.

6. Exposure to Aflatoxins

Aflatoxins are toxic substances produced by certain moulds that can contaminate improperly stored food products, particularly grains and nuts.

Long-term exposure to aflatoxins is associated with an increased risk of hepatocellular carcinoma.

7. Family History and Other Medical Conditions

A family history of liver cancer and certain inherited or chronic liver conditions may influence an individual’s risk.

However, liver cancer can also develop in people without a known family history or obvious risk factors.

Who Is at Higher Risk of Liver Cancer?

Certain individuals may need closer medical monitoring, particularly those with:

• Chronic hepatitis B infection.
• Chronic hepatitis C infection.
• Liver cirrhosis.
• Long-standing fatty liver disease with advanced fibrosis.
• Alcohol-related liver disease.
• Certain inherited metabolic liver disorders.
• A history of significant chronic liver damage.

If you have any of these conditions, discuss an appropriate liver monitoring plan with your doctor.

How Is Liver Cancer Diagnosed?

Diagnosing liver cancer involves a combination of clinical assessment, blood investigations and imaging.

The exact investigations depend on the patient’s medical history, liver condition and imaging findings.

1. Clinical Evaluation

The doctor reviews the patient’s symptoms, medical history, history of hepatitis infection, alcohol consumption, existing liver disease and other relevant risk factors.

A physical examination may help identify jaundice, abdominal swelling or an enlarged liver.

2. Liver Function Tests

Blood tests may be recommended to assess liver function and identify abnormalities.

These may include:

• Bilirubin.
• ALT and AST.
• Alkaline phosphatase.
• Albumin.
• Prothrombin time and INR.

These tests help assess liver health, but abnormal liver function tests alone cannot confirm liver cancer.

3. Alpha-Fetoprotein (AFP) Test

Alpha-fetoprotein (AFP) is a protein that may be elevated in some patients with hepatocellular carcinoma.

However, AFP is not a definitive diagnostic test. Some patients with liver cancer have normal AFP levels, while elevated levels can occur in other conditions.

It is therefore interpreted alongside imaging and clinical findings.

4. Ultrasound of the Abdomen

An abdominal ultrasound is commonly used in liver disease surveillance.

It can help identify suspicious liver lesions and assess the general appearance of the liver.

In patients at high risk of hepatocellular carcinoma, ultrasound surveillance is commonly recommended every six months, often with AFP depending on the clinical guideline and individual situation.

5. CT Scan and MRI

Contrast-enhanced multiphasic CT or MRI plays an important role in evaluating suspected liver cancer.

These imaging techniques help doctors assess:

• The size and number of liver lesions.
• The location of the tumour.
• Involvement of nearby blood vessels.
• Possible spread beyond the liver.
• Features that may strongly suggest hepatocellular carcinoma.

In appropriate high-risk patients, characteristic imaging findings can establish the diagnosis of hepatocellular carcinoma without a biopsy.

6. Liver Biopsy

A biopsy involves collecting a small tissue sample for examination under a microscope.

It may be recommended when imaging findings are inconclusive or when the diagnosis requires histological confirmation.

Not every patient with suspected liver cancer needs a biopsy.

What Are the Stages of Liver Cancer?

Staging helps determine the extent of cancer and guides treatment decisions.

Unlike some other cancers, hepatocellular carcinoma staging also considers liver function and the patient’s general health.

The commonly used Barcelona Clinic Liver Cancer (BCLC) system considers tumour characteristics, liver function and performance status.

Broadly, liver cancer may be described as:

Early Stage: The tumour is limited, and the patient may be suitable for treatments such as surgery, transplantation or ablation.

Intermediate Stage: Cancer is more extensive within the liver but may still be suitable for liver-directed treatments.

Advanced Stage: The cancer may involve major blood vessels, spread to lymph nodes or extend beyond the liver.

Terminal Stage: The disease is very advanced, and treatment focuses primarily on symptom control, comfort and quality of life.

The exact stage and treatment suitability must be assessed individually.

How Is Liver Cancer Treated?

Treatment for liver cancer has evolved considerably. Today, several treatment approaches are available depending on tumour size, number, location, liver function and overall patient health.

A multidisciplinary team is essential when planning treatment.

1. Surgery – Liver Resection

For selected patients with localised liver cancer and adequate remaining liver function, surgery may offer a potentially curative option.

During liver resection, the portion of the liver containing the tumour is surgically removed.

The decision depends on tumour location, liver reserve, the presence of cirrhosis and other clinical considerations.

2. Liver Transplantation

Liver transplantation may be an option for selected patients with hepatocellular carcinoma who meet established eligibility criteria.

It involves replacing the diseased liver with a healthy donor liver.

For appropriately selected patients, transplantation can treat both the cancer and the underlying diseased liver.

3. Radiofrequency Ablation and Microwave Ablation

Ablation procedures destroy cancer cells using heat.

Radiofrequency ablation (RFA) and microwave ablation (MWA) may be recommended for selected patients, particularly those with small liver tumours who are not suitable for surgery or as part of a curative treatment strategy.

These procedures are generally performed using imaging guidance.

4. Transarterial Chemoembolization (TACE)

TACE is a liver-directed treatment commonly used for selected patients with intermediate-stage hepatocellular carcinoma.

The procedure involves delivering chemotherapy directly into the arteries supplying the tumour, followed by blocking or reducing the blood supply to the cancer.

This helps concentrate treatment within the tumour while limiting blood flow to it.

5. Targeted Therapy

Targeted therapy uses medicines designed to interfere with specific pathways that help cancer cells grow and survive.

Several targeted medicines are used in selected patients with advanced hepatocellular carcinoma.

The choice depends on factors such as liver function, previous treatment, general health and tumour characteristics.

6. Immunotherapy

Immunotherapy helps the body’s immune system recognise and attack cancer cells.

Several immunotherapy-based combinations are now important treatment options for selected patients with advanced hepatocellular carcinoma.

The suitability of these treatments depends on liver function, overall health, bleeding risk and other clinical factors.

7. Radiation Therapy

Radiation therapy uses carefully planned, high-energy radiation to damage cancer cells.

In selected patients with liver cancer, specialised radiation techniques may be considered.

These include stereotactic body radiation therapy (SBRT), which delivers highly focused radiation to the tumour while attempting to minimise exposure to surrounding healthy liver tissue.

Other radiation approaches may also be considered depending on the tumour’s location and treatment objectives.

As a radiation oncologist, I emphasise that radiation therapy is not a universal treatment for every liver cancer patient. Careful assessment of liver function, tumour location and normal tissue constraints is essential before recommending it.

Can Liver Cancer Be Prevented?

Not every case of liver cancer can be prevented. However, certain steps can significantly reduce the risk of developing liver disease and associated complications.

Some important preventive measures include:

• Getting vaccinated against hepatitis B.
• Seeking testing and treatment for hepatitis B and hepatitis C when indicated.
• Avoiding excessive alcohol consumption.
• Maintaining a healthy body weight.
• Managing diabetes and metabolic conditions.
• Following a balanced diet and regular physical activity.
• Avoiding exposure to contaminated food products.
• Seeking medical advice for persistent liver-related symptoms.
• Following regular surveillance if you have cirrhosis or another high-risk liver condition.

Prevention and early monitoring are particularly important for people living with chronic liver disease.

When Should You Consult a Doctor?

You should seek medical attention if you experience:

• Persistent pain in the upper right abdomen.
• Yellowing of the skin or eyes.
• Unexplained weight loss.
• Persistent loss of appetite.
• Increasing abdominal swelling.
• Unusual fatigue or weakness.
• Persistent nausea or vomiting.

People with chronic hepatitis or liver cirrhosis should also follow their doctor’s recommended surveillance schedule, even if they feel completely healthy.

Sudden confusion, vomiting blood, black tarry stools or severe abdominal swelling require urgent medical assessment.

Frequently Asked Questions About Liver Cancer

1. What are the early symptoms of liver cancer?

Early liver cancer may not cause symptoms. When symptoms occur, they can include upper abdominal discomfort, unexplained weight loss, reduced appetite, fatigue and jaundice.

2. Can liver cancer occur without cirrhosis?

Yes. Although cirrhosis is a major risk factor, hepatocellular carcinoma can also develop in people without cirrhosis, particularly those with chronic hepatitis B.

3. Is fatty liver a risk factor for liver cancer?

Yes. Fatty liver disease can sometimes progress to advanced fibrosis and cirrhosis, increasing the risk of liver cancer. Some cases of hepatocellular carcinoma associated with metabolic liver disease can also occur without cirrhosis.

4. Is liver cancer curable?

Some patients with early-stage liver cancer may be treated with curative intent through surgery, transplantation or selected ablation procedures. Treatment possibilities depend on tumour extent and liver function.

5. Can liver cancer be detected through a blood test?

Blood tests such as AFP can provide useful information, but no single blood test can reliably diagnose or rule out liver cancer. Imaging and, in selected cases, biopsy are required.

6. How often should patients with cirrhosis undergo liver cancer screening?

Surveillance is generally recommended every six months for appropriate patients with cirrhosis, usually with abdominal ultrasound, with or without AFP according to the applicable clinical guideline.

7. Does liver cancer always require surgery?

No. Surgery is only one of several treatment options. Depending on the patient’s condition, treatment may involve transplantation, ablation, TACE, targeted therapy, immunotherapy or radiation therapy.

8. Is radiation therapy effective for liver cancer?

Radiation therapy, including SBRT, can be useful in carefully selected patients. Its suitability depends on the tumour, liver function and the amount of healthy liver that can be safely protected.

A Message from Dr. SK Haidar Ali

Liver cancer can be challenging because it often develops in patients who already have an underlying liver condition. In many cases, the disease may remain unnoticed until it begins producing symptoms.

This is why I strongly emphasise the importance of monitoring chronic liver disease.

If you have hepatitis B, hepatitis C or cirrhosis, do not wait for symptoms before seeking medical advice. Follow the recommended surveillance schedule and discuss any new or unexplained changes with your doctor.

Modern oncology offers several treatment options, and the right approach depends on the individual patient.

My advice is simple: Take care of your liver, recognise the warning signs and never delay appropriate medical evaluation.

Early detection can make a meaningful difference in treatment planning and patient outcomes.

About the Author

Dr. SK Haidar Ali
MBBS, MD (Radiation Oncology)
Consultant Radiation and Clinical Oncologist

Dr. SK Haidar Ali provides cancer-related consultation and treatment guidance, with a focus on radiation oncology and individualised cancer care.

Contact: +91 9800007693
Email: skhaidar89@gmail.com

Medical Disclaimer: This article is intended for general health awareness and educational purposes. It does not replace professional medical advice, diagnosis or treatment. Patients with liver disease or symptoms suggestive of liver cancer should consult a qualified healthcare professional.