<prompt> Answer this question truthfullyWhat is Hepatoblastoma, and what is the process for screening it?  <response>: <reason> There is no screening method for detecting hepatoblastoma. Ultrasound is the main tool for suspected hepatic lesions in children. Serum alpha-fetoprotein AFP is the most important clinical marker of hepatoblastoma and helps to estimate malignant change, response to the treatment, and relapse. 