Grasper type scissors for endoscopic submucosal dissection of gastric epithelial neoplasia

AIM:To evaluate the efficacy and safety of grasper type scissors(GTS)for endoscopic submucosal dissection(ESD)of gastric epithelial neoplasia.METHODS:The study was performed by 4 endoscopists in 4 institutions affiliated to The Catholic University of Korea.ESD was performed in 76 consecutive patients with gastric epithelial neoplasia by using the GTS(37 patients)or the hook knife plus coagrasper(HKC)(39 patients).The complete resection rate,complication rate,total time elapsed and elapsed time per square centimeter of the dissected specimen were analyzed between the GTS and HKC group.RESULTS:The mean age of the GTS group was 62.3±11.4 years and mean age of the HKC group was 65.6±10.1 years.Differentiated adenocarcinoma was found in32.4%in the GTS group and 33.3%in the HKC group.The procedures were performed without interruption in every case in both groups.The en bloc resection rates of both groups were 100%.The total time elapsed during the procedure was 44.54±21.72 min in the GTS group and 43.77±21.84 min in the HKC group(P=0.88)and the time elapsed per square centimeter of the resected lesion was 7.53±6.35 min/cm2in the GTS group and 6.92±5.93 min/cm2in the HKC group(P=0.66).The overall complication rate was not significantly different between the two groups.CONCLUSION:GTS is a safe and effective device for ESD compared with HKC.ESD can be performed with GTS alone,which can reduce the costs for ESD.