Department of Pathology;
Eastern Hepatobiliary Surgery Hospital;
Second Military Medical University;
Department of Biliary Surgery;
Eastern Hepatobiliary Surgery Hospital;
Second Military Medical University;
Department of Hepatic Surgery;
Eastern Hepatobiliary Surgery Hospital;
Second Military Medical University;
Combined hepatocellular and cholangiocarcinoma; Hepatocellular carcinoma; Intrahepatic cholangiocellular carcinoma; Loss of heterozygosity; Clonal origin; Prognosis;