Besides, compared with those in the regular pancreatectomy group, patients in the parenchyma-preserving surgery group had smaller tumor sizes and fewer lymph nodes, with no significant difference observed among the other pathological parameters including the number of lymph node metastasis, Ki-67 index, angioinvasion, or nerve infiltration. Here, MKI67 is linked to metastatic malignant neoplasm in the lymph nodes.