Trial for Application of Laparoscopic Total Gastrectomy With Lymph Node Dissection for Gastric Cancer (KLASS-06)

Inclusion Criteria: * Patients who are over 20 and below 80 years old * Patients who have performance status of ECOG 0 or 1 * Patients with American Society of Anesthesiology score of class I to III * Patients who are diagnosed with gastric adenocarcinoma not involving Z-line by endoscopy with biopsy * Patients with tumors which can be curatively resected by total gastrectomy with lymph node dissection based on preoperative study * Patients who have primary gastric carcinoma invaded into over muscle propria, and not into adjacent organ in preoperative studies (cT2 \~ cT4a) * Patients who have no metastasis to lymph nodes or limited metastasis to perigastric lymph node metastasis in preoperative studies (cN0 \~ cN2) * Patients who agree with participating in the clinical study with informed consents * Patients who can be followed for at least 3 years after study enrollment Exclusion Criteria: * Patients who have possibility of distant metastasis in preoperative studies * Patients who have history of gastric resection with any cause * Patients who have complications (bleeding or obstruction) of gastric cancer * Patients who are treated by chemo(radio)therapy or endoscopic submucosal dissection for gastric cancer * Patients who are diagnosed and treated with other malignancies within 5 years * Vulnerable patients * Patients who participating or participated in other clinical trial within 6 months