Inclusion Criteria:  Patients with a diagnosis of malignant liver tumor contemplating for extended right hepatectomy or right trisectionectomy Patient consent Age >/= 18 FLR/ESLV </= 30% Indocyanine green clearance rate at 15 mins : < 18% Platelet count > 100x10^9/L Child A cirrhosis (due to hepatitis B/C virus, or alcohol, or autoimmune disease) American Society of Anaesthesiology score < 3 Eastern Cooperative Oncology Group (ECOG) performance status 0-2  Technical factors eligible for laparoscopic ALPPS  single long-segment portal  Exclusion Criteria:  Absence of consent Decompensated liver disease as indicated by the presence of ascites, varices and hepatic encephalopathy ECOG performance status >/= 3 Main portal vein thrombosis FLR/ESLV > 30%  Technical factors not eligible for laparoscopic ALPPS  Short-segment right portal vein or early bifurcation of right anterior/posterior portal vein, or other portal vein anomalies Large tumor size with diameter > 5 cm Intolerance to CO2 pneumoperitoneum