Multivariate Cox regression analysis including tumor size, node status, metastasis status, tumor histological grade, margin status, nerve plexus invasion, lymphatic invasion, venous invasion, intrapancreatic neural invasion, and expression of ARG2 in stromal cells showed that expression of ARG2 in stromal cells, metastatic status, lymphatic invasion, and venous invasion were independent predictors of OS (Table 1), and that expression of ARG2 in stromal cells, metastatic status, nerve plexus invasion, and venous invasion were independent predictors of DFS (Table 2). Here, ARG2 is linked to neoplasm.