1% (3/37) versus 10.0% (4/40) (p = 1.00). In-hospital death happened two case (5.4%, 2/37) in stent group and one case in surgery only

group (p = 0.60). 7 patients (18.9%) in stent group and 11 patient (27.5%) in surgery group underwent emergency surgery (p = 0.37). Open surgery rate was 32.4% (12/37) versus 40.0% (16/40), respectively (p = 0.49). Subgroup analysis showed that emergency surgery rate of stent group who had successful stent insertion was significantly lower compared to surgery only group (6.7%, p < 0.01). The overall success rate of colorectal stent insertion for malignant colorectal obstruction was 88.7% (77/86). The success rate of stent as a bridge to curative surgery was 81.1% (30/37). Failure of the guidewire passage through lesions occurred in 5 patients (13.5%). Perforation during procedure occurred in 2 patients Caspase inhibitor (5.4%). All patients who were performed stent insertion successfully, achieved symptom improvement. Conclusion: Clinical outcomes of endoscopic colorectal stenting as a bridge to surgery showed no

additional clinical benefit comparing with surgery only for curative purpose of obstructive colorectal cancer. Although, emergency surgery rate in stent group was lower than in surgery group. If the patients are at increased risk for complications of emergency surgery, stent can be considered as alternative approach to emergency surgery. Key Word(s): 1. colon; 2. stent; 3. malignant obstruction Presenting Author: JOONKOO KANG Additional Authors: SUN GYO LIM, HOON HUR, CHEULSU BYUN, KEE MYUNG LEE, Y27632 JIN HONG KIM, SANG UK HAN, YONG KWAN CHO Corresponding Author: JOONKOO KANG Affiliations: Ajou Univertisy School of Medicine, Ajou Univertisy School of Medicine, MCE公司 Ajou Univertisy School of Medicine, Ajou Univertisy

School of Medicine, Ajou Univertisy School of Medicine, Ajou Univertisy School of Medicine, Ajou Univertisy School of medicine Objective: Endoscopic submucosal dissection (ESD) has been reserved for patients with early gastric cancer (EGC) that are unlikely to have metastatic lymph nodes. However, the identification of metastatic lymph nodes before resection is challenging in usual clinical setting. We performed a prospective pilot study to evaluate the efficacy of laparoscopy-assisted endoscopic full-thickness resection (LAEFTR) with sentinel node navigation surgery for patients with EGC. Methods: We enrolled patients who were diagnosed as early gastric cancer with submucosal invasion or undifferentiated mucosal cancer of 2 cm or less cm without ulceration between January 2012 and March 2013. Endoscopic full-thickness resection was performed with the endoscopic knife by a half of tumor circumference. And then, laparoscopic resection was performed for the rest of tumor circumference. Sentinel node was navigated by indocyanine green injected with endoscope around the tumor and then resected. Patients received a follow-up endoscopy after 6 month and the interview was done every 2 months for 6 months.