Early Postoperative Intervention in Gastric Cancer Patients

Inclusion Criteria: * Age 18-80 years; * Histologically confirmed adenocarcinoma by preoperative pathology; * Completed preoperative neoadjuvant therapy without obvious immune-related adverse events (irAEs); * Patients with ycT3-4N+Mx disease deemed surgically resectable based on evaluation by gastroscopy, CT, PET-CT, and other imaging modalities; * Signed informed consent and voluntary participation in this study; * Standard ERAS (Enhanced Recovery After Surgery) management during the - perioperative period, with postoperative hospital stay ≤7 days. Exclusion Criteria: * Patients with central nervous system diseases or psychiatric disorders; * Patients with severe diseases of other organ systems; * Patients with recurrent infectious diseases or severe comorbidities; * Patients requiring synchronous surgery for other diseases; * Patients undergoing emergency surgery; * Patients who developed any complication during hospitalization.