Comparison of Kimura Versus Warshaw Technique for Laparoscopic Spleen-Preserving Distal Pancreatectomy

Inclusion Criteria: * Age between 18 and 70 years, regardless of gender. * Preoperative clinical diagnosis of benign or low-grade malignant pancreatic tumors. * Meeting the recommended surgical indications as per guidelines. * Feasibility of imaging assessment for either Kimura or Warshaw technique laparoscopic spleen-preserving distal pancreatectomy. * Performance status of 0 or 1 according to the Eastern Cooperative Oncology Group (ECOG) score. * Willingness to comply with the study treatment plan, follow-up schedule, and other protocol requirements. * Voluntarily participating in the study and signing an informed consent form. Exclusion Criteria: * Body Mass Index (BMI) \> 28 kg/m2 (Chinese obesity standard). * History of blood disorders, acute or chronic pancreatitis, gastrointestinal bleeding, splenic rupture, or gastric varices (preoperative CT indicating curved vessel structures along the gastric wall with a diameter \> 5mm). * History of abdominal surgery. * Concomitant primary malignant tumors. * Suspicion of malignancy based on PET-CT or other imaging examinations. * Severe impairment of cardiac, liver, or kidney function (NYHA class 3-4, ALT and/or AST exceeding three times the upper limit of normal, Creatinine exceeding the upper limit of normal). * Planned pregnancy or pregnancy and lactating women. * Participants currently involved in other clinical trials.