Childhood Hepatocellular Carcinoma
Childhood hepatocellular carcinoma is a rare type of cancer that forms in liver cells called hepatocytes. Hepatocytes are the most common cells of the liver, and they carry out most of the functions of the liver.
The liver is one of the largest organs in the body. It has two lobes and fills the upper right side of the abdomen inside the rib cage. Three of the many important functions of the liver are the following:
- to make bile to help digest fats from food
- to store glycogen (sugar), which the body uses for energy
- to filter harmful substances from the blood so they can be passed from the body in stools and urine
Childhood hepatocellular carcinoma usually affects older children and adolescents. It is more common in areas of Asia that have higher rates of hepatitis B virus infection than in the U.S.
Hepatocellular carcinoma is the most common type of liver cancer in adults. Risk factors, staging, and treatment for children are different than for adults. For information about hepatocellular carcinoma in adults, see What Is Liver Cancer?
Causes and risk factors for childhood hepatocellular carcinoma
Childhood hepatocellular carcinoma is caused by certain changes in the way liver cells function, especially how they grow and divide into new cells. Often, the exact cause of the cell changes is unknown. To learn more about how cancer develops, see What is Cancer?
A risk factor is anything that increases the chance of getting a disease. Not every child with one or more of these risk factors will develop hepatocellular carcinoma, and it will develop in some children who don’t have a known risk factor.
The following syndromes or conditions are risk factors for childhood hepatocellular carcinoma:
- Alagille syndrome.
- Glycogen storage disease.
- Hepatitis B virus infection that was passed from mother to child at birth.
- Progressive familial intrahepatic disease.
- Tyrosinemia: Some patients with tyrosinemia are diagnosed with hepatocellular carcinoma after receiving a liver transplant, before there are signs or symptoms of cancer.
Hepatocellular carcinoma may develop in children with no underlying liver disease.
Talk with your child’s doctor if you think your child may be at risk.
Symptoms of childhood hepatocellular carcinoma
Children may not have symptoms of hepatocellular carcinoma until the tumor has grown bigger. It's important to check with your child’s doctor if your child has any of the symptoms below:
- a lump in the abdomen
- swelling in the abdomen
- abdominal pain
- weight loss for no known reason
- loss of appetite
- nausea and vomiting
These symptoms may be caused by conditions other than hepatocellular carcinoma. The only way to know is to see your child’s doctor.
Tests to diagnose childhood hepatocellular carcinoma
If your child has symptoms that suggest hepatocellular carcinoma, the doctor will need to find out if these are due to cancer or to another condition. The doctor will ask you when the symptoms started and how often your child has been having them. They will also ask about your child’s personal and family medical history and do a physical exam. Based on these results, the doctor may recommend diagnostic tests to find out if your child has hepatocellular carcinoma. The results of these tests will also help you and your child’s doctor plan treatment.
The following tests and procedures are used to diagnose hepatocellular carcinoma in children:
Serum tumor marker test
Serum tumor marker tests measure the amounts of certain substances released into the blood by organs, tissues, or tumor cells in the body. Certain substances are linked to specific types of cancer when found in increased levels in the blood. These are called tumor markers. The blood of children who have liver cancer may have increased amounts of a hormone called beta-human chorionic gonadotropin (beta-hCG) or a protein called alpha-fetoprotein (AFP). Other cancers, benign liver tumors, and certain noncancer conditions, including cirrhosis and hepatitis, can also increase AFP levels.
Complete blood count (CBC)
A sample of blood is drawn and checked for the following:
Liver function tests
Liver function tests measure the amounts of certain substances released into the blood by the liver. A higher-than-normal amount of a substance can be a sign of liver damage or cancer.
Blood chemistry studies
Blood chemistry studies measure the amounts of certain substances, such as bilirubin or lactate dehydrogenase (LDH), released into the blood by organs and tissues in the body. An unusual (higher or lower than normal) amount of a substance can be a sign of disease.
Hepatitis array checks for pieces of the hepatitis virus.
Magnetic resonance imaging (MRI) with gadolinium
MRI uses a magnet, radio waves, and a computer to make a series of detailed pictures of areas inside the liver. A substance called gadolinium is injected into a vein. The gadolinium collects around the cancer cells, so they show up brighter in the picture. This procedure is also called nuclear MRI.
CT scan (CAT scan)
A CT scan uses a computer linked to an x-ray machine to make a series of detailed pictures of areas inside the body, taken from different angles. A dye may be injected into a vein or swallowed to help the organs or tissues show up more clearly. This procedure is also called computed tomography, computerized tomography, or computerized axial tomography.
In childhood liver cancer, a CT scan of the chest and abdomen is usually done.
To learn more, see Computed Tomography (CT) Scans and Cancer.
An ultrasound exam is a procedure in which high-energy sound waves (ultrasound) are bounced off internal tissues or organs and make echoes. The echoes form a picture of body tissues called a sonogram. In childhood liver cancer, an ultrasound exam of the abdomen to check the large blood vessels is usually done.
A chest x-ray is an x-ray of the lungs. An x-ray is a type of high-energy radiation that can go through the body onto film, making a picture of areas inside the body.
Biopsy is a procedure in which a sample of tissue is removed from the tumor so that a pathologist can view it under a microscope to check for signs of cancer. The doctor may remove as much tumor as safely possible during the same biopsy procedure.
Immunohistochemistry uses antibodies to check for certain antigens (markers) in a sample of a patient’s tissue. The antibodies are usually linked to an enzyme or a fluorescent dye. After the antibodies bind to a specific antigen in the tissue sample, the enzyme or dye is activated, and the antigen can then be seen under a microscope. This type of test is used to help diagnose cancer and to help tell one type of cancer from another type of cancer.
Getting a second opinion
You may want to get a second opinion to confirm your child’s diagnosis and treatment plan. If you seek a second opinion, you will need to get important medical test results and reports from the first doctor to share with the second doctor. The second doctor will review the pathology report, slides, and scans before giving a recommendation. They may agree with the first doctor, suggest changes or another approach, or provide more information about your child’s cancer.
To learn more about choosing a doctor and getting a second opinion, see Finding Health Care Services. You can contact NCI’s Cancer Information Service via chat, email, or phone (both in English and Spanish) for help finding a doctor or hospital that can provide a second opinion. For questions you might want to ask at your appointments, see Questions to Ask Your Doctor.
Prognostic factors for childhood hepatocellular carcinoma
If your child has been diagnosed with hepatocellular carcinoma, you may have questions about how serious the cancer is and your child's chances of survival. The likely outcome or course of a disease is called prognosis.
The prognosis for childhood hepatocellular carcinoma depends on the following:
- the PRETEXT group
- whether the cancer can be removed completely by surgery
- whether the cancer has spread to other places in the body, such as the lungs
- how the cancer responds to chemotherapy
- whether your child has hepatitis B virus infection
- whether the cancer has just been diagnosed or has come back after treatment
For childhood hepatocellular carcinoma that recurs (comes back) after initial treatment, the prognosis depends on the following:
- where in the body the tumor recurred
- the type of treatment used to treat the initial cancer
No two people are alike, and responses to treatment can vary greatly. Your child's cancer care team is in the best position to talk with you about your child's prognosis.
Stages of childhood hepatocellular carcinoma
The cancer stage describes the extent of cancer in the body, especially whether the cancer has spread from where it first formed to other parts of the body.
In childhood hepatocellular carcinoma, the PRETEXT and POSTTEXT groups are used to plan treatment. The results of the tests and procedures done to detect, diagnose, and find out whether the cancer has spread are used to determine the PRETEXT and POSTTEXT groups.
Two grouping systems are used for childhood hepatocellular carcinoma to decide whether the tumor can be removed by surgery:
- The PRETEXT group describes the tumor before the patient has any treatment.
- The POSTTEXT group describes the tumor after the patient has had treatment such as neoadjuvant chemotherapy.
The liver is divided into four sections for the two grouping systems. The PRETEXT and POSTTEXT groups depend on which sections of the liver have cancer. There are four PRETEXT and POSTTEXT groups.
PRETEXT and POSTTEXT group I
In group I, the cancer is found in one section of the liver. Three sections of the liver that are next to each other do not have cancer in them.
PRETEXT and POSTTEXT group II
In group II, cancer is found in one or two sections of the liver. Two sections of the liver that are next to each other do not have cancer in them.
PRETEXT and POSTTEXT group III
In group III, one of the following is true:
- Cancer is found in three sections of the liver, and one section does not have cancer.
- Cancer is found in two sections of the liver, and two sections that are not next to each other do not have cancer in them.
PRETEXT and POSTTEXT group IV
In group IV, cancer is found in all four sections of the liver.
Progressive and recurrent childhood hepatocellular carcinoma
Childhood hepatocellular carcinoma can be a progressive disease or refractory disease. Progressive hepatocellular carcinoma is cancer that continues to grow, spread, or worsen. Refractory hepatocellular carcinoma is cancer that no longer responds to treatment.
Recurrent hepatocellular carcinoma is cancer that has recurred (come back) after it has been treated. The cancer may come back in the liver or in other parts of the body. Tests will be done to help determine where the cancer has returned in the body, if it has spread, and how far. The type of treatment that your child will have for recurrent hepatocellular carcinoma will depend on how far it has spread.
To learn more, see Recurrent Cancer: When Cancer Comes Back.
Types of treatment for childhood hepatocellular carcinoma
There are different types of treatment for children and adolescents with hepatocellular carcinoma. You and your child’s care team will work together to decide treatment. Many factors will be considered, such as your child’s overall health and whether the cancer is newly diagnosed or has come back.
A pediatric oncologist, a doctor who specializes in treating children with cancer, will oversee treatment. The pediatric oncologist works with other healthcare providers who are experts in treating children with hepatocellular carcinoma and who specialize in certain areas of medicine. It is especially important to have a pediatric surgeon with experience in liver surgery who can send patients to a liver transplant program if needed. This may include the following specialists and others:
Your child's treatment plan will include information about the cancer, the goals of treatment, treatment options, and the possible side effects. It will be helpful to talk with your child's care team before treatment begins about what to expect. For help every step of the way, see our downloadable booklet, Children with Cancer: A Guide for Parents.
When possible, the cancer is removed by surgery. The types of surgery that may be done are:
- Partial hepatectomy removes the part of the liver where cancer is found by surgery. The part removed may be a wedge of tissue, an entire lobe, or a larger part of the liver, along with a small amount of normal tissue around it.
- Total hepatectomy and liver transplant is the removal of the entire liver by surgery, followed by a transplant of a healthy liver from a donor. A liver transplant may be possible when cancer has not spread beyond the liver, and a donated liver can be found. If the patient has to wait for a donated liver, other treatment is given as needed.
- Resection of metastases is surgery to remove cancer that has spread outside of the liver, such as to nearby tissues, the lungs, or the brain.
The type of surgery that can be done depends on the following:
- the PRETEXT group and POSTTEXT group
- the size of the primary tumor
- whether there is more than one tumor in the liver
- whether the cancer has spread to nearby large blood vessels
- the level of AFP in the blood
- whether the tumor can be shrunk by chemotherapy so that it can be removed by surgery
- whether a liver transplant is needed
Chemotherapy is sometimes given before surgery to shrink the tumor and make it easier to remove. This is called neoadjuvant therapy.
After the doctor removes all the cancer that can be seen at the time of the surgery, some patients may be given chemotherapy or radiation therapy to kill any cancer cells that are left. Treatment given after the surgery, to lower the risk that the cancer will come back, is called adjuvant therapy.
Chemotherapy (also called chemo) uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Chemotherapy may be given alone or with other types of treatment, such as radiation therapy.
There are two main ways to give chemotherapy to treat childhood hepatocellular carcinoma.
- Systemic chemotherapy is chemotherapy that is injected into a vein or muscle. When given this way, the drugs enter the bloodstream and can reach cancer cells throughout the body.
- Regional chemotherapy is chemotherapy that is placed directly into the cerebrospinal fluid, an organ, or a body cavity such as the abdomen. When given this way, the drugs mainly affect cancer cells in those areas.
Chemoembolization of the hepatic artery (the main artery that supplies blood to the liver) is a type of regional chemotherapy used to treat childhood hepatocellular carcinoma that cannot be removed by surgery. The anticancer drug is injected into the hepatic artery through a catheter (thin tube). The drug is mixed with a substance that blocks the artery, cutting off blood flow to the tumor. Most of the anticancer drug is trapped near the tumor, and only a small amount of the drug reaches other parts of the body. The blockage may be temporary or permanent, depending on the substance used to block the artery. The tumor is prevented from getting the oxygen and nutrients it needs to grow. The liver continues to receive blood from the hepatic portal vein, which carries blood from the stomach and intestine to the liver. This procedure is also called transarterial chemoembolization, or TACE.
Chemotherapy drugs used to treat childhood hepatocellular carcinoma include:
Combinations of these drugs may be used. Other chemotherapy drugs not listed here may also be used.
To learn more about how chemotherapy works, how it is given, common side effects, and more, see Chemotherapy to Treat Cancer.
Radiation therapy uses high-energy x-rays or other types of radiation to kill cancer cells or keep them from growing. Hepatocellular carcinoma in children may be treated with internal radiation therapy. Internal radiation therapy uses a radioactive substance sealed in needles, seeds, wires, or catheters that are placed directly into or near the cancer.
- Radioembolization is a type of internal radiation therapy used to treat childhood hepatocellular carcinoma. A very small amount of a radioactive substance is attached to tiny beads that are injected into the hepatic artery (the main artery that supplies blood to the liver) through a thin tube called a catheter. The beads are mixed with a substance that blocks the artery, cutting off blood flow to the tumor. Most of the radiation is trapped near the tumor to kill the cancer cells. This is done to shrink the tumor or to relieve symptoms and improve quality of life for children with hepatocellular carcinoma.
Hepatocellular carcinoma that is linked to the hepatitis B virus may be treated with antiviral drugs.
A treatment clinical trial is a research study meant to help improve current treatments or obtain information on new treatments for patients with cancer. Because cancer in children is rare, taking part in a clinical trial should be considered.
Use our clinical trial search to find NCI-supported cancer clinical trials that are accepting patients. You can search for trials based on the type of cancer, the age of the patient, and where the trials are being done. Some clinical trials are open only to patients who have not started treatment. Clinical trials supported by other organizations can be found on the ClinicalTrials.gov website.
To learn more, see Clinical Trials Information for Patients and Caregivers.
Targeted therapy uses drugs or other substances to block the action of specific enzymes, proteins, or other molecules involved in the growth and spread of cancer cells. Targeted therapy is being studied for the treatment of hepatocellular carcinoma that has come back after treatment.
To learn more about how targeted therapy works against cancer, what to expect when having targeted therapy, and targeted therapy side effects, see Targeted Therapy to Treat Cancer.
Treatment of newly diagnosed childhood hepatocellular carcinoma
Treatment options for newly diagnosed hepatocellular carcinoma that can be removed by surgery at the time of diagnosis may include the following:
- surgery to remove the tumor, followed by chemotherapy
- combination chemotherapy, followed by surgery to remove the tumor
- surgery alone to remove the tumor
Treatment options for newly diagnosed hepatocellular carcinoma that cannot be removed by surgery and has not spread to other parts of the body at the time of diagnosis may include the following:
- chemotherapy to shrink the tumor, followed by surgery to completely remove the tumor
- chemotherapy to shrink the tumor
If surgery to completely remove the tumor is not possible, further treatment may include the following:
- liver transplant
- chemoembolization or radioembolization of the hepatic artery to shrink the tumor, followed by surgery to remove the tumor or liver transplant
- chemoembolization or radioembolization of the hepatic artery alone
- radioembolization of the hepatic artery as palliative therapy to relieve symptoms and improve the quality of life
Treatment for newly diagnosed hepatocellular carcinoma that has spread to other parts of the body at the time of diagnosis may include the following:
- Combination chemotherapy to shrink the tumor, followed by surgery to remove as much of the tumor as possible from the liver and other places where cancer has spread. Studies have shown that this treatment may not work well, but some patients may have some benefit.
Treatment options for newly diagnosed hepatocellular carcinoma related to hepatitis B virus infection may include the following:
- surgery to remove the tumor, followed by antiviral drugs that treat infection caused by the hepatitis B virus
Treatment options in clinical trials for newly diagnosed hepatocellular carcinoma may include the following:
- a clinical trial of combination chemotherapy and surgery
Treatment of progressive or recurrent childhood hepatocellular carcinoma
Treatment of progressive or recurrent hepatocellular carcinoma may include the following:
- chemoembolization of the hepatic artery to shrink the tumor before liver transplant
- liver transplant
Side effects and late effects of treatment
For information about side effects that begin during treatment for cancer, see our Side Effects page.
Problems from cancer treatment that begin 6 months or later after treatment and continue for months or years are called long-term or late effects. Late effects of cancer treatment may include the following:
- physical problems that affect liver function or hearing
- changes in mood, feelings, thinking, learning, or memory
- second cancers (new types of cancer)
Some late effects may be treated or controlled. It is important to talk with your child's doctors about the long-term effects cancer treatment can have on your child. To learn more, see Late Effects of Treatment for Childhood Cancer.
As your child goes through treatment, they will have follow-up tests or check-ups. Some of the tests that were done to diagnose the cancer or to find out the treatment group may be repeated to see how well the treatment is working. Decisions about whether to continue, change, or stop treatment may be based on the results of these tests.
Some of the tests will continue to be done from time to time after treatment has ended. The results of these tests can show if your child's condition has changed, or if the cancer has recurred (come back).
Coping with your child's cancer
When your child has cancer, every member of the family needs support. Taking care of yourself during this difficult time is important. Reach out to your child’s treatment team and to people in your family and community for support. To learn more, see Support for Families When a Child Has Cancer and the booklet Children with Cancer: A Guide for Parents.