This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pathology
[{'content': 'All of the following statements are true regarding hepatoblastoma, except: \nSelect and explain. \nA. A type of small round cell tumor, B. Most common liver tumor of early childhood, C. Activation of JAK-STAT pathway involved in pathogenesis, D. Associated with Beckwith-Wiedemann syndrome', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Hepatoblastoma Most common liver tumor of early childhood. Rarely occurs over the age of 3 years. Activation of the Wnt signaling pathway is characteristic of hepatoblastoma. Associated with Beckwith-Wiedemann syndrome and familial adenomatous polyposis. It is a type of small blue round cell tumour with two histological subtypes - epithelial type and and mixed epithelial-mesenchymal type. Good prognosis.', 'role': 'assistant'}]