A Study to Evaluate Sintilimab Plus Lenvatinib as Adjuvant Therapy in Hepatocellular Carcinoma With Portal Vein Tumor Thrombosis (PVTT) After Surgical Resection
To compare the impact on recurrence risk of adjuvant Sintilimab (a recombinant fully human anti-PD-1 monoclonal antibody) plus Lenvatinib for patients with hepatocellular carcinoma and portal vein tumor thrombus (PVTT ) after hepatectomy.