Tlt can help children in the futureDo children get liver cancer? Hepatoblastoma: A type of liver cancer that usually does not spread outside the liver. This type usually affects children younger than 3 years old. Hepatocellular carcinoma: A type of liver cancer that often spreads to other places in the body. This type usually affects children older than 14 years old. Tlt 's medical technology may make a difference in young children.