Hepatoblastoma (Childhood Liver Cancer), from the CureRays guide library.

Hepatoblastoma is the most common liver cancer in young children; most are cured with chemotherapy to shrink the tumor followed by surgery or, for the most extensive cases, a liver transplant — radiation is used selectively, with proton therapy favored to protect a growing child.

What it is.

Hepatoblastoma is the most common cancer of the liver in children, almost always occurring in babies and children under about 3 to 5 years of age. It develops from immature liver cells and usually shows up as a swelling or firm mass in the abdomen, sometimes found by a parent or on a routine check, occasionally with poor appetite, weight loss, or belly pain. A blood protein called alpha-fetoprotein (AFP) is elevated in most children with hepatoblastoma; it is very useful both for supporting the diagnosis and for tracking how the tumor responds to treatment and watching for any return. Hepatoblastoma is more common in children born very prematurely or with very low birth weight, and it is linked to a few inherited conditions — including Beckwith-Wiedemann syndrome and familial adenomatous polyposis (FAP) — so a diagnosis sometimes prompts genetic evaluation of the child and family. The encouraging reality is that hepatoblastoma is highly treatable, and most children are cured. The modern approach combines chemotherapy, which is very effective at shrinking these tumors, with surgery to remove the affected part of the liver. The liver's remarkable ability to regrow means a large portion can be removed safely, and the sequence often used — chemotherapy first to shrink the tumor, then an operation — turns many initially inoperable tumors into removable ones. For the most extensive tumors that involve too much of the liver to remove safely, a liver transplant offers a cure. Radiation therapy plays a smaller, selective role here; when it is used, doctors lean toward precise techniques such as proton therapy to spare the surrounding healthy organs in a young, growing body.

How radiation treats it.

Radiation therapy works by delivering focused energy that damages the DNA inside cancer cells so they can no longer grow and divide. In hepatoblastoma, radiation plays a deliberately small and selective role, and understanding why explains how it is used. The reason is that the two main tools — chemotherapy and surgery — are so effective. Cisplatin-based chemotherapy shrinks these tumors dramatically and clears spread to the lungs, while the liver's remarkable ability to regrow allows surgeons to remove a large portion of the organ; and for tumors too extensive to remove, a liver transplant can be curative. Together these cure most children without radiation. Radiation is therefore reserved for specific problems, such as tumor left behind after surgery that cannot be removed or controlled by other means, or, rarely, lung deposits that persist after chemotherapy and surgery. When radiation is used in a young child, protecting the developing body becomes a central concern, because growing tissues and organs are sensitive to radiation and there is a long lifetime ahead in which late effects could appear. This is where modern, highly precise techniques matter most: proton beam therapy deposits its dose in the tumor and then stops, sparing the nearby healthy liver, kidneys, bowel, and spine far better than older methods and reducing the radiation delivered to growing tissue. The goal in these selected cases is local control — eliminating a specific pocket of disease that surgery and chemotherapy could not — while keeping the dose to the rest of the body as low as possible. Because hepatoblastoma is so treatable with chemotherapy and surgery, decisions about radiation are made carefully by a children's cancer team, weighing the benefit of controlling residual disease against the importance of protecting a child's long-term health.

The ways we can treat it.

Proton beam therapy. Proton beams deposit their dose precisely in the tumor and stop, sparing the surrounding liver, kidneys, bowel, and spine — especially valuable in young children to limit radiation to growing tissue and reduce long-term effects.

Selective adjuvant radiation. Focused radiation to residual disease that remains after surgery and cannot be removed or controlled by other means, used in carefully chosen cases as part of a coordinated plan.

Radiation for lung metastases (selected). In rare situations, focused radiation can address lung deposits that persist after chemotherapy and surgery, complementing the main treatments.

Questions we hear often.

Can hepatoblastoma be cured? Yes — most children with hepatoblastoma are cured. The combination of effective chemotherapy to shrink the tumor and surgery to remove the affected part of the liver works very well, and the liver's ability to regrow makes large operations possible. Even extensive tumors confined to the liver can be cured with a liver transplant, and disease that has spread to the lungs can often still be cured with chemotherapy and surgery.

Will my child need radiation? Usually not. Most children are cured with chemotherapy and surgery alone, so radiation is reserved for specific situations, such as tumor left behind after surgery that can't be removed. When radiation is used in a young child, doctors favor very precise techniques like proton therapy to protect the surrounding organs and growing tissue and to limit long-term effects.

Why is the AFP blood test important? Alpha-fetoprotein (AFP) is a protein that is high in most children with hepatoblastoma. It helps support the diagnosis at the start, and because the level falls as the tumor responds to treatment, doctors use it to track how well therapy is working and to watch for any sign the cancer is coming back after treatment ends.

This guide is informational only. It is not medical advice — please confirm anything here with your care team.