Demographic characteristics, clinical features and laboratory findings of the patient groups on day of ERC/day of blood collection.

Abbreviations: ECC, extrahepatic cholangiocarcinoma; ICC, intrahepatic cholangiocarcinoma; y, yes; n, no; M, male; F, female; ALT, alanine aminotransferase; AST, aspartate aminotransferase; AP, alkaline phosphatase; GGT, gamma-glutamyl transferase; CRP, C-reactive protein; WBC, white blood cells; LDH, lactate dehydrogenase; CA 19-9, carbohydrate antigen 19-9; CEA, carcinoembryonic antigen; angpt-2, angiopoietin-2.