Childhood Liver Cancer Treatment (PDQ®): Treatment - Health Professional Information [NCI] - Cellular Classification
Transitional liver cell tumor
Transitional liver cell tumor is a rare neoplasm that is found in older children and adolescents, and has a putative intermediate position between hepatoblasts and more mature hepatocyte-like tumor cells. The tumor cells may vary in regions of the tumor between classical hepatoblastoma and obvious hepatocellular carcinoma. The tumors are usually unifocal and may have central necrosis at presentation. Response to chemotherapy is poor, much like hepatocellular carcinoma.
Undifferentiated Embryonal Sarcoma of the Liver
Undifferentiated embryonal sarcoma of the liver is a distinct clinical and pathologic entity and accounts for 2% to 15% of pediatric hepatic malignancies. Distinctive features are intracellular hyaline globules and marked anaplasia on a mesenchymal background.
Infantile Choriocarcinoma of the Liver
These tumors are usually very friable and hemorrhagic and may present with bleeding into the tumor. The diagnosis can be made by imaging and findings of extremely high beta-human chorionic gonadotropin levels.
Cytotrophoblasts and syncytiotrophoblasts are both present. The former are closely packed nests of medium-sized cells with clear cytoplasm, distinct cell margins, and vesicular nuclei. The latter are very large multinucleated syncytia formed from the cytotrophoblasts.
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