“…This study's findings underscore the significant impact of primary site surgery on prognostic survival (OS: 0.62958, P = 0.000543; CSS: 0.58972, P = 0.000162), highlighting the crucial role of postoperative and perioperative chemotherapy in enhancing prognosis, unlike preoperative chemotherapy alone. Ballhausen et al [ 30 ] multicenter retrospective analysis corroborates the beneficial effects of perioperative chemotherapy on disease-free survival (DFS) and OS in this patient group. Our study findings are consistent with those of Ballhausen et al demonstrating the positive impact of perioperative chemotherapy on the prognosis of gastric cancer patients.…”