title: Hepatoblastoma. A clinical and pathologic study of 54 cases.
abstract: The clinical and pathologic features of 54 children with hepatoblastoma are reviewed. Their average age at diagnosis was 17 months (range: 4 months-4 1/2 years) and there was a predilection for males in a ratio of nearly 2:1. Unusual manifestations included isosexual precocity (two cases), hemihypertrophy and Budd-Chiari syndrome (one case), and synchronous Wilms' tumor (one case). Thirty-two of 49 conventional hepatoblastomas were subclassified as epithelial type (19 predominantly embryonal, 13 predominantly fetal), and 12 had mixed epithelial-mesenchymal histology. Pathologic material in five cases was too limited for reliable subclassification. Hepatoblastomas classified as anaplastic type had more primitive histology with a predominance of small- to medium-sized cells in diffuse sheets. The overall mortality was 76% and the average duration of disease from diagnosis to death was 8 months (range: 1 month-27 months). Complete surgical resection remains the key treatment for achieving long-term survival and was attempted in 33 of the 54 children (61%). There were 13 long-term survivors followed for an average of 9 years. The most common type of hepatoblastoma in these children was epithelial with a predominantly fetal pattern. None of the children with anaplastic tumors survived.
mesh_terms: D006528:Carcinoma, Hepatocellular / Q000401:mortality / Q000473:pathology*; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008099:Liver / Q000473:pathology*; D008113:Liver Neoplasms / Q000401:mortality / Q000473:pathology*; D008297:Male