Currently, the only effective treatment for hepatoblastoma in childhood is lobectomy. Right lobectomy and right-extended lobectomy are more commonly done for hepatoblastoma and a formal left lobectomy. This videotape depicts a left formal lobectomy for a very large hepatoblastoma which had to be peeled off the stomach and transverse colon in order to completely resect the tumor. This video shows the detailed dissection of the porta hepatis and the hepatic veins. The use of electrocautery to dissect the hepatic parenchyma is well-known.