Abstract
Portal vein tumor thrombus (PVTT) and extrahepatic metastasis are associated with the prognosis of hepatocellular carcinoma (HCC). We aimed to investigate the effect of hepatitis B virus (HBV) infection on HCC patients with PVTT or extrahepatic metastasis. The clinical data of 639 patients with HCC from our hospital were retrospectively analyzed to analyze the correlation between HBV and HCC with PVTT or extrahepatic metastasis. Univariate analysis revealed that positive hepatitis B virus surface antigen (HBsAg), a detectable serum hepatitis B virus DNA load (>500 IU/ml), cirrhosis and ascites were associated with the presence of PVTT. Positive hepatitis B virus e antigen (HBeAg), cirrhosis and ascites were associated with the presence of extrahepatic metastasis. In a multivariate regression analysis carried out a detectable serum hepatitis B virus DNA load, cirrhosis and ascites were independent risk factors of PVTT. Ascites was an independent risk factor of extrahepatic metastasis. The patients in the PVTT of type III/IV group and the PVTT of type I/II group had a significantly higher rate of positive serum HBsAg, a detectable serum hepatitis B virus DNA load (>500 IU/ml) and HBsAg + HBeAb + HBcAb test positive compared with those in the PVTT-negative group. HBsAg + HBeAb + HBcAb test positive was significantly associated with the presence of extrahepatic metastasis (P=0.028). HBV infection and replication status are associated with the formation of PVTT or extrahepatic metastasis in patients with HCC.
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