Fig. 2From: Nomograms predict long-term survival for patients with periampullary adenocarcinoma after pancreatoduodenectomyKapaln-Meier curves for PFS according to LNR (P = 0.019, a CA19–9 (P = 0.014, b Tumor differentiation (P = 0.001, c and anatomical location (P = 0.001, dBack to article page