Comparison of Tumor Efficacy Safety in Laparoscopic Resection of Gastrointestinal Stromal Tumors Between Favorable and Unfavorable Site

Who May Qualify: 1. Age between 18 and 75 years old 2. Primary gastric lesion confirmed pathologically GIST by endoscopic biopsy. Preoperative endoscopy, ultrasound endoscopy or computer tomography, Magnetic resonance suspected GIST, and then postoperative pathology confirmed as the original GIST 3. Written willing to sign a consent form 4. Expected R0 resection by laparoscopy 5. Performance status of 0 or 1 on the ECOG (Eastern Cooperative Oncology Group) scale 6. ASA (American Society of Anesthesiology) class I to III 7. Maximum tumor diameter ≤10cm Who Should NOT Join This Trial: 1. Pregnant and lactating women 2. Suffering from a severe mental disorder 3. History of previous upper abdominal surgery (except for laparoscopic cholecystectomy) 4. History of previous gastric surgery (including ESD/EMR for gastric cancer) 5. Rejection of laparoscopic resection 6. History of other malignant disease within the past five years 7. History of unstable angina or myocardial infarction within the past six months 8. History of a cerebrovascular accident within the past six months 9. History of continuous systematic administration of corticosteroids within one month 10. Requirement of simultaneous surgery for another disease 11. Emergency surgery due to complications (bleeding, obstruction or perforation) caused by gastric cancer 12. FEV1\<50% of the predicted values 13. Maximum tumor diameter \>10cm Always talk to your doctor about whether this trial is right for you.