Preliminary Efficacy Analysis of "C" Single Flap Plasty Reconstruction After Laparoscopic Proximal Gastrectomy

Inclusion criteria

• Age between 18-80 years old, male or female;
• Pathological diagnosis of preoperative endoscopic biopsy: the tumor is located in the upper 1/3 of the stomach (including the esophagogastric junction), and the clinical staging of gastric cancer： Ia and Ib (T1N0M0, T1N1M0, and T2N0M0) according to the eighth edition of the AJCC ;
• No distant metastasis was observed on preoperative chest radiograph, abdominal ultrasound, or upper abdominal CT;
• ASA grade 1-3;
• Patients without contraindications to surgery;
• Patients and their families voluntarily signed the informed consent form and participated in the study;

Exclusion criteria

• Patients diagnosed with primary tumors or distant metastasis;
• Patients whose tumor is located in the greater curvature side of the stomach;
• Patients with coagulation dysfunction that could not be corrected;
• Patients who were diagnosed with viral hepatitis and cirrhosis;
• Patients who were diagnosed with diabetes mellitus, uncontrolled or controlled with insulin;
• Patients with organ failure such as heart, lung, liver, brain, and kidney failure;
• Patients with ascites or cachexia preoperatively in poor general conditions;
• Patients diagnosed with immunodeficiency, immunosuppression, or autoimmune diseases (such as allogeneic bone marrow transplant, immunosuppressive drugs, SLE, etc.).
• Patients refusing to sign the informed consent of the study;