Carbohydrate antigen 19-9 as a novel prognostic biomarker in distal cholangiocarcinoma

Figure 1 Screening flow chart. DCC: distal cholangiocarcinoma; PHC: primary hepatic carcinoma.

Figure 2 Time-dependent receiver operating characteristic curve. The area under curve of the carbohydrate antigen 19-9 to γ-glutamyltransferase ratio to predict the 1-year overall survival was 0.695.

Figure 3 Long-term prognosis of the patients with distal cholangiocarcinoma. A: Overall DFS curve of patients; B: OS curve of patients. DFS: disease-free survival; OS: overall survival.

Figure 4 Overall long-term prognosis between two groups in patients with distal cholangiocarcinoma. A: Overall disease-free survival curve of two groups of patients; B: Overall survival curve of two groups of patients. CA19-9: carbohydrate antigen 19-9; GGT: γ-glutamyltransferase.