AI Summary Hepatoblastoma is a rare liver cancer that starts before birth and mostly affects children between six months and three years old. Doctors do not fully know the cause. Its main sign is a painless lump or swelling in the belly. Diagnosis uses blood tests for tumor markers, imaging, and usually a biopsy. Treatment combines chemotherapy and surgery, and some children need a liver transplant. More than 85% of children are alive 10 years after diagnosis.
Medically reviewed.
Hepatoblastoma is the most common primary liver cancer in children — cancer that starts in the liver itself. It begins before birth, from immature liver cells, and it is found mostly in newborns, infants, and toddlers. Most children are diagnosed between six months and three years of age, and boys are affected somewhat more often than girls.
Hepatoblastoma is rare, and it is a different disease from the liver cancer seen in adults. Treatment almost always combines chemotherapy with surgery, and some children need a liver transplant. Most children are cured: more than 85% are alive 10 years after diagnosis.
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About hepatoblastoma
Hepatoblastoma is a highly malignant solid tumor of the liver. It is the most common primary liver tumor in childhood — a tumor that starts in the liver itself, rather than spreading there from another organ. It develops from immature precursor cells of liver tissue, and the change in these cells begins before birth. It is rare, making up about 1% of cancers in children.
Hepatoblastoma mostly affects very young children. Most are between six months and three years old, and the average age at diagnosis is 1.5 years. Children over age four are rarely affected. Boys are affected more often than girls, at a ratio of about 1.4 to 1.
Most hepatoblastomas are a single, large tumor, often in the right lobe of the liver. About 15% of children have tumors in several areas of the liver, which signals more aggressive growth. The tumor rarely grows outside the liver. When it spreads, it most often goes to the lungs through the bloodstream, and about 10% to 20% of children already have lung metastases at diagnosis.
Doctors describe how far the tumor has grown using a system called PRETEXT, which stands for PRE-Treatment EXTent of disease. This stage guides whether surgery is possible and how intense chemotherapy should be.
How hepatoblastoma may show up
Hepatoblastoma most often appears as a painless lump or swelling in a child's belly, sometimes found during a routine physical exam. Other signs can be general and easy to miss.
Getting checked
Doctors diagnose hepatoblastoma through a physical exam, blood tests, imaging, and usually a biopsy. Because the patients are so young, children are referred to a hospital with a childhood cancer program, where specialists confirm the tumor type and how far it has spread. Imaging scans are done under sedation.
Children between six months and three years old may not need a biopsy when imaging shows a liver tumor and AFP in the blood is above 1,000 ng/ml and at least three times the normal level for that age. A biopsy may still be suggested in a research study.
Care & treatment
Treatment for hepatoblastoma depends on the type, location, and size of the tumor, and on whether it can be removed. Doctors assign each child to a risk group, and higher-risk groups receive more intense treatment. Treatment takes place at a children's hospital with a pediatric oncology program and usually lasts about three to twelve months.
Almost every child receives chemotherapy. It usually comes in two phases: chemotherapy before surgery to shrink the tumor, and chemotherapy after surgery to clear any remaining cancer cells and lower the risk of relapse. Cisplatin is the most important drug and may be combined with others. Most hepatoblastomas respond well, and this approach works in up to 90% of children. Because of the children's young age, radiation therapy is not part of treatment.
Removing the whole tumor is the most important factor in a child's chance of survival. Surgeons usually remove whole liver segments or an entire liver lobe, with a safety margin of healthy tissue. If lung metastases are still visible after chemotherapy, they are removed too. Surgery is followed by at least one more round of chemotherapy.
A liver transplant may be considered when the tumor cannot be removed by surgery. This can happen when all four liver sections are affected (PRETEXT IV), when there are tumors in several areas, or when a large blood vessel is involved and the stage does not improve with chemotherapy.
If the tumor does not respond to chemotherapy, and surgery or transplant is not possible, doctors may use chemoembolization. It delivers chemotherapy into the blood vessels that feed the tumor while blocking them. This can shrink the tumor enough for later surgery or bridge the time until a transplant. It can cause complications, so doctors weigh the benefits and risks for each child. Other treatments used in adults, such as laser therapy, freezing, or heat ablation, are not important in children and are considered only in palliative care.
Chemotherapy and surgery are the two main parts of treatment. Children do best when the whole tumor can be removed, which is why care at a pediatric cancer center matters.
How hepatoblastoma develops
Doctors do not fully understand what causes hepatoblastoma. Experts believe a trigger acts before birth. Some children have a known risk factor, but many have none.
Premature birth and very low birth weight raise the risk of hepatoblastoma, and both are becoming more common. Some cases are linked to rare inherited syndromes, but in many children the disease arises from spontaneous DNA changes.
When to get checked
Hepatoblastoma is rare. It is usually found when a parent or doctor notices a lump or swelling in the belly. Knowing when to act, and where to go for care, matters.
Contact your child's doctor promptly if you notice a lump or swelling in your child's abdomen, even if your child seems well. Also raise concerns about unexplained weight loss or poor weight gain, loss of appetite, fever, fatigue, belly pain, or yellowing of the skin or eyes.
Some children have conditions linked to a higher risk, such as Beckwith-Wiedemann syndrome or familial adenomatous polyposis. Ask your child's doctor what follow-up is right for your family.
A child with a suspected liver tumor should go quickly to a hospital with a childhood cancer program. Tests and treatment are planned there by pediatric cancer experts who work closely together and follow treatment plans that are continuously improved.
A child's cancer is stressful for the whole family. The psychosocial team at a pediatric cancer center offers advice and support from diagnosis through treatment and aftercare. Families are encouraged to use it.
Eating & liver health
Diet cannot treat hepatoblastoma. Chemotherapy, surgery, and sometimes transplant are the treatments. Good nutrition can still be part of your child's overall care.
A liver-friendly eating pattern generally emphasizes whole foods, vegetables, fruits, lean proteins, and healthy fats while limiting added sugars and highly processed foods.
A child's nutritional needs depend on age, treatment plan, and overall health, and can change during cancer treatment. Work with your child's care team, including a dietitian, on an eating plan that fits your child before making changes.
Explore Liver DietCommon questions
Hepatoblastoma is the most common primary liver cancer in children, meaning it starts in the liver itself. It develops from immature liver cells and begins before birth. Most children are diagnosed between six months and three years old, and children over age four are rarely affected. It is rare, making up about 1% of cancers in children. It differs from hepatocellular carcinoma, the most common liver cancer in adults, and from cholangiocarcinoma, which starts in the bile ducts.
Doctors do not fully know what causes hepatoblastoma. Experts believe a trigger acts before birth. Premature birth and very low birth weight raise the risk, and both are becoming more common, which may explain why the disease is diagnosed more often than it used to be. Some cases are linked to rare inherited conditions: Beckwith-Wiedemann syndrome, familial adenomatous polyposis (FAP), and Edwards' syndrome (trisomy 18). In other children, spontaneous changes in the DNA of liver cells play a role.
Most children with hepatoblastoma have a painless lump or swelling in the belly. Some also have fever, fatigue, loss of appetite, weight loss, belly pain, or nausea. Jaundice and easy bruising are less common. Because the lump is often painless, it may be found during a routine exam. Any new belly lump or swelling in a child should be checked promptly.
Usually yes, but not always. A tissue sample gives the final diagnosis. Children between six months and three years old may skip it when imaging shows a liver tumor and the blood level of AFP is above 1,000 ng/ml and at least three times the normal level for that age. Doctors also use ultrasound, MRI, or CT to see the tumor, and chest imaging to look for lung metastases. Scans are done under sedation in young children.
Almost all children receive chemotherapy and surgery. Chemotherapy, with cisplatin as the key drug, shrinks the tumor before surgery and continues afterward to lower the risk of relapse. Surgeons then remove the tumor, usually with part or all of a liver lobe. Some children need a liver transplant when the tumor cannot be removed. Radiation therapy is not used because of the children's young age. Treatment is given at a children's hospital with a pediatric oncology program and takes about three to twelve months.
Medical disclaimer: LiverDirectory provides educational information and a directory of providers. It does not provide medical advice, diagnosis, or treatment. Always consult a licensed physician regarding any medical condition.
