Abstract

Hepatectomy with tumor thrombectomy is the preferred treatment option for hepatocellular carcinoma (HCC) patients with bile duct tumor thrombus (BDTT); however, the impact of BDTT on their prognosis is unclear. We aimed to investigate the long-term surgical outcomes of HCC patients with BDTT. The data of HCC patients with and without BDTT who underwent hepatectomy were retrospectively reviewed and the long-term outcomes were compared. For propensity score matching (PSM) analysis, patients were matched in a 1:1 ratio. Subgroup analysis was conducted according to the American Joint Committee on Cancer (AJCC) staging system. Before PSM, HCC patients with BDTT had more advanced tumor stages and adverse clinicopathological features. Recurrence-free survival (RFS) and overall survival (OS) were significantly higher in the non-BDTT group before PSM (RFS, p<0.001; OS, p<0.001), while after PSM, the BDTT group had significantly poorer RFS (p=0.025). There was no difference in OS between the groups (p=0.588). Subgroup analysis showed that RFS and OS in AJCC stage I-II patients were significantly poorer in the BDTT group; no differences were found in the AJCC stage III group before or after PSM. When the presence of BDTT was recommended to increase the AJCC staging system by one stage in AJCC stage I-II patients, the predictive ability for RFS and OS was higher. BDTT was associated with significantly poorer long-term surgical outcomes in AJCC stage I-II patients. A modified AJCC staging system including BDTT status in stage I-II might have a better prognostic ability.

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