Hepatoblastoma

Japanese: hepatoblastoma

...Primary liver cancer is broadly classified into hepatocellular carcinoma and cholangiocarcinoma based on pathology and clinical findings. In addition, there is hepatoblastoma, a special type of primary malignant tumor seen in infants and young children.
[Hepatocellular carcinoma]
This was previously called hepatoma, and most liver cancers belong to this category.

From [Childhood Cancer]

...Hematuria may also be present. (4) Hepatoblastoma and liver cancer There is hepatoblastoma, which is specific to children, and liver cancer as an adult type. In either case, it is rarely accompanied by cirrhosis of the liver, as is the case with adult liver cancer.

*Some of the terminology that mentions "hepatoblastoma" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…原発性肝癌は病理および臨床的に肝細胞癌hepatocellular carcinomaと胆管細胞癌cholangio carcinomaに大別される。また，特殊な原発性悪性腫瘍として乳幼児にみられる肝細胞芽腫hepatoblastomaがある。
［肝細胞癌］
　従来，ヘパトーマhepatomaといわれていたもので，肝臓癌の大半はこれに属する。…