PTGDR and neoplasm: Univariate analysis identified 11 prognostic factors (T, N, TNM, radicality, MLNR, tumour size, CEA, CA19‐9, TMEM92‐AS1, NWR and NLR) in OS (Table 2) and 10 prognostic factors (T, N, TNM, radicality, MLNR, tumour size, CEA, TMEM92‐AS1, NWR and NLR) in DFS (Table 3).