ALB and neoplasm: For instance, in patients < 75 years, independent prognostic factors included serum albumin levels < 3.5 g/dL, lymph node metastasis, tumor size, and R1/R2 resection, whereas for patients ≥ 75 years, significant factors included lymph node metastasis, elevated CA19‐9 levels, R1/R2 resection, and a high mFI.