title: Grasper type scissors for endoscopic submucosal dissection of gastric epithelial neoplasia.
abstract: OBJECTIVE
  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 in 32.4% 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/cm(2) in the GTS group and 6.92 ± 5.93 min/cm(2) in the HKC group (P = 0.66). The overall complication rate was not significantly different between the two groups.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Woo-Chul Chung, Division of Gastroenterology, Department of Internal Medicine, Suwon St. Vincent's Hospital, The Catholic University of Korea, Suwon 441-400, South Korea.
authors.forename: Woo-Chul
authors.initials: WC
authors.lastname: Chung
authors.forename: Byung-Wook
authors.initials: BW
authors.lastname: Kim
authors.forename: Chul-Hyun
authors.initials: CH
authors.lastname: Lim
authors.forename: Tae-Ho
authors.initials: TH
authors.lastname: Kim
authors.forename: Jae-Myung
authors.initials: JM
authors.lastname: Park
authors.forename: Joon-Sung
authors.initials: JS
authors.lastname: Kim
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000601:surgery*; D000368:Aged; D016009:Chi-Square Distribution; D004210:Dissection / Q000009:adverse effects / Q000379:methods*; D004867:Equipment Design; D005260:Female; D005773:Gastroscopy / Q000009:adverse effects / Q000295:instrumentation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology; D011446:Prospective Studies; D056910:Republic of Korea; D013274:Stomach Neoplasms / Q000473:pathology / Q000601:surgery*; D013525:Surgical Instruments; D013997:Time Factors; D016896:Treatment Outcome
keywords: Coagrasper; Endoscopic submucosal dissection; Gastric epithelial neoplasia; Grasper type scissors; Hook knife