<prompt> Answer this question truthfullyWhat exactly is hepatoblastoma and how can it be distinguished from other illnesses?  <response>: <reason> Hepatoblastoma must be differentiated from other diseases that cause rapidly enlarging abdominal mass in pediatrics such as: Hepatocellular carcinoma HCC of liver Focal nodular hyperplasia of liver Hepatic adenoma of liver Lymphoma, and metastases to liver 