Pancreatoblastoma, from the CureRays guide library.

Pancreatoblastoma is a rare cancer of the pancreas that occurs mostly in young children, and it is often curable when the tumor can be removed by surgery and supported with chemotherapy.

What it is.

Pancreatoblastoma is the most common pancreatic cancer of childhood, though it is still very rare. It grows from immature, embryonic-type cells of the pancreas — the gland behind the stomach that makes digestive juices and the hormone insulin. Because it usually starts as a single, often large mass, children may come to attention with a belly lump, pain, or weight loss. About 7 in 10 tumors release a protein called alpha-fetoprotein (AFP) into the blood, which doctors use both to help diagnose the disease and to follow how it responds to treatment. Most cases occur in children, but it can rarely appear in adults, where it tends to behave more aggressively. The single most important factor for cure is whether the tumor can be completely removed.

How radiation treats it.

Radiation damages the DNA inside cancer cells so they cannot keep dividing. In pancreatoblastoma it plays only a supporting role — surgery and chemotherapy do most of the work — but when tumor remains that cannot be removed, focused radiation can help control it. Because patients are usually young children, any radiation is delivered with the most precise techniques (IMRT or protons) and in small daily doses to protect the surrounding organs that are still developing. It is painless and leaves no radioactivity in the body.

The ways we can treat it.

Conformal photon radiation (IMRT/IGRT). When radiation is needed, image-guided, intensity-modulated beams concentrate the dose on residual tumor while sparing the bowel, kidneys, liver, and spine of a growing child.

Proton beam therapy. Protons stop at a set depth, sparing tissue beyond the target. In children this lowers the long-term dose to developing organs near the pancreas.

Questions we hear often.

Is pancreatoblastoma curable? Often yes, especially in children when the tumor has not spread and can be completely removed. Surgery combined with chemotherapy gives many children a long, disease-free life. The outlook is harder when the cancer has already spread or cannot be fully removed.

Why does my child need surgery and chemotherapy both? Surgery removes the visible tumor, which is essential for cure. Chemotherapy shrinks large tumors before surgery and mops up any microscopic cancer cells afterward, lowering the chance the disease comes back.

What does the AFP blood test tell us? Most pancreatoblastomas release AFP into the blood. A falling level usually means treatment is working, and the test is repeated over time so that a rise can signal a recurrence early, often before symptoms appear.

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