A high expression of PDPN was an independent risk factor for DSS (relative risk (RR) = 2.153, p = 0.022) and tumor size >20 mm was an independent risk factor for both DFS (RR = 2.514, p = 0.013) and DSS (RR = 2.535, p = 0.032; Table 3). Here, PDPN is linked to neoplasm.