Risk factors for occult metastasis detected by inflammation-based prognostic scores and tumor markers in biliary tract cancer

Figure 1 Receiver operating characteristic curves. The cutoff values for carbohydrate antigen 19-9, carcinoembryonic antigen and the neutrophil-lymphocyte ratio were 255 U/mL, 7 ng/mL and 3, respectively. CA19-9: Carbohydrate antigen 19-9; CEA: Carcinoembryonic antigen; AUC: Area under the curve.

Figure 2 Overall survival in 236 patients with biliary tract cancer who underwent laparotomy. A: Stratified by carcinoembryonic antigen (P < 0.0001); B: Carbohydrate antigen 19-9 (P < 0.0001); C: Neutrophil-lymphocyte ratio (NLR; P = 0.034); D: Modified Glasgow prognostic score (P < 0.0001); E: Type of operation (P < 0.0001). CA19-9: Carbohydrate antigen 19-9; CEA: Carcinoembryonic antigen; NLR: Neutrophil-lymphocyte ratio; mGPS: Modified Glasgow prognostic score.