Robotic Total Gastrectomy for Locally Advanced Proximal Gastric Cancer

Inclusion Criteria: * Age between 18 to 75 years old * Primary gastric adenocarcinoma (papillary, tubular, mucinous, signet ring cell, or poorly differentiated) confirmed pathologically by endoscopic biopsy * Locally advanced tumor in the upper third or middle third of stomach without invading the greater curvature (cT2-4a, N-/+, M0 at preoperative evaluation according to the AJCC (American Joint Committee on Cancer) Cancer Staging Manual Seventh Edition) * No distant metastasis, no direct invasion of pancreas, spleen or other organs nearby in the preoperative examinations * Performance status of 0 or 1 on ECOG (Eastern Cooperative Oncology Group) scale * ASA (American Society of Anesthesiology) class I to III * Written informed consent Exclusion Criteria: * Pregnant and lactating women * Suffering from severe mental disorder * History of previous upper abdominal surgery (except for laparoscopic cholecystectomy) * History of previous gastric surgery (including ESD/EMR (Endoscopic Submucosal --Dissection/Endoscopic Mucosal Resection )for gastric cancer) * Enlarged or bulky regional lymph node （diameter over 3cm）supported by preoperative imaging including enlarged or bulky No.10 lymph node * History of other malignant disease within the past 5 years * History of previous neoadjuvant chemotherapy or radiotherapy * History of unstable angina or myocardial infarction within the past 6 months * History of cerebrovascular accident within the past 6 months * History of continuous …