Definite markers for hepatoblastoma is-
LDH
Alpha-fetoprotein (AFP)
HCG
Alkaline phosphatase
Hepatoblastoma  

Hepatoblastorna is the most common primary hepatic tumor of childhood. Rare cases of adult hepatoblastoma have been reported, but overall, the median age of presentation is 18 months, & almost all cases occur before the age of 3 years.
Recently it has been associated with familial polyposis syndrome.
Most often, this tumor presents as an asymptomatic mass.
It arises from right lobe 3 times more than left.
Serum APP is elevated in 85-90% of patients and can serve as a useful marker for therapeutic response.