Randomized Controlled Trials on Clinical Outcomes of Totally Laparoscopic Versus Laparoscopy Assisted Total Gastrectomy for Gastric Cancer

Randomized Controlled Trials on Clinical Outcomes of Totally Laparoscopic Versus Laparoscopy Assisted Total Gastrectomy for Gastric Cancer

The purpose of this study is to explore clinical outcomes of totally laparoscopic versus laparoscopy assisted total gastrectomy for gastric cancer.

Inclusion Criteria:

1. Age between 18 to 75 years old
2. Primary gastric adenocarcinoma (papillary, tubular, mucinous, signet ring cell, or poorly differentiated) confirmed pathologically by endoscopic biopsy
3. Locally advanced tumor in the middle third stomach（cT1-4a, N-/+, M0 at preoperative evaluation according to the AJCC(American Joint Committee on Cancer) Cancer Staging Manual Seventh Edition）
4. No distant metastasis, no direct invasion of pancreas, spleen or other organs nearby in the preoperative examinations
5. Performance status of 0 or 1 on ECOG (Eastern Cooperative Oncology Group) scale
6. ASA (American Society of Anesthesiology) class I to III
7. Written informed consent

Exclusion Criteria:

1. Pregnant and lactating women
2. Suffering from severe mental disorder
3. History of previous upper abdominal surgery (except for laparoscopic cholecystectomy)
4. History of previous gastric surgery (including ESD/EMR (Endoscopic Submucosal Dissection/Endoscopic Mucosal Resection )for gastric cancer)
5. Enlarged or bulky regional lymph node （diameter over 3cm）supported by preoperative imaging including enlarged or bulky No.10 lymph node
6. History of other malignant disease within the past 5 years
7. History of previous neoadjuvant chemotherapy or radiotherapy
8. History of unstable angina or myocardial infarction within the past 6 months
9. History of cerebrovascular accident within the past 6 months
10. History of continuous systematic administration of corticosteroids within 1 month
11. Requirement of simultaneous surgery for other disease
12. Emergency surgery due to complication (bleeding, obstruction or perforation) caused by gastric cancer
13. FEV1<50% of the predicted values