Background Microvascular invasion (MVI) is a risk factor for postoperative survival outcomes for hepatocellular carcinoma (HCC) after liver resection (LR). This study aims to investigate the actual long-term survival and its associated prognostic factors after LR for HCC patients with MVI. Methods This study was conducted on HCC patients with MVI who underwent LR from January 2009 to December 2012 at five major hospitals in China. The patients were divided into the 'long-term survivor group' and the 'short-term survivor group'. The clinicopathologic characteristics, perioperative data and survival outcomes were compared between these two groups. Univariate and multivariate regression analyses were performed to identify predictive factors associated with longterm survival outcomes. ResultsThe study included 1517 patients with an actual 5-year survival rate of 33.3%. Multivariate regression analysis revealed that HBV DNA > 10 4 IU/mL, alanine aminotransferase > 44 U/L, alpha-fetoprotein > 400 ng/ml, anatomical hepatectomy, varices, intraoperative blood loss > 400 ml, tumor diameter > 5 cm, tumor number, satellite nodules, tumor encapsulation, wide resection margin and adjuvant transarterial chemoembolization (TACE) were independent prognostic factors associated with actual long-term survival. Conclusions One-third of HCC patients with MVI reached the long-term survival milestone of 5 years after resection. Anatomical hepatectomy, controlling intraoperative blood loss, a wide resection margin, and postoperative adjuvant TACE should be considered for patients to achieve better long-term survival outcomes.

Aim: Transarterial chemoembolization (TACE) combined with a PD-1 inhibitor and TACE combined with a PD-1 inhibitor and lenvatinib have recently been reported as promising treatments to improve the prognosis of hepatocellular carcinoma (HCC) patients. This study aims to compare the efficacy of these two treatments.Methods: A retrospective study was conducted, and patients were recruited from two centers in China. Progression-free survival (PFS) and overall survival (OS) were compared, and the objective response rate (ORR) and disease control rate (DCR) were evaluated according to the modified Response Evaluation Criteria in Solid Tumors (mRECIST). Treatment-related adverse events (AEs) were analyzed to assess safety. Results:The median follow-up for the entire cohort was 11.4 months. Of the 103 patients included in this study, 56 received triple therapy, and 47 received doublet therapy. PFS was significantly higher in the triple therapy group than in the doublet therapy group (mPFS 22.5 vs. 14.0 months, P < 0.001). Similar results were obtained in terms of OS (P = 0.001). The ORR and DCR were also better in the triple therapy group (64.3% vs. 38.3%, P = 0.010; 85.7% vs. 57.4%, P = 0.002). The most common AEs in the triple therapy group were decreased albumin (55.3%), decreased platelet count (51.8%) and hypertension (44.6%). Conclusions:The combination of TACE with a PD-1 inhibitor and lenvatinib in patients with BCLC stage B HCC might result in significantly improved clinical outcomes with a manageable safety profile compared with TACE with a PD-1 inhibitor.

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