title: Successful outcomes of a novel endoscopic treatment for GI tumors: endoscopic submucosal dissection with a mixture of high-molecular-weight hyaluronic acid, glycerin, and sugar.
abstract: BACKGROUND
  Endoscopic submucosal dissection (ESD) has recently been developed for endoscopic treatment of GI tumors, which enables us to resect even large tumors en bloc. However, a considerable frequency of perforation has become another problem. The best way to prevent perforation is to create a sufficient submucosal fluid cushion (SFC). The aim of this study is to find out the feasibility of ESD by using a mixture of 1900 KDa hyaluronic acid (Suvenyl) and a 10% glycerin plus 5% fructose solution (Glyceol).
  
  
  METHODS
  Sixty-seven consecutive GI tumors in 54 patients who met indication criteria of ESD were enrolled. The mixing ratios of Suvenyl and Glyceol were 1:3 for esophageal/colorectal tumors and stomach tumors with scar, and 1:7 for stomach tumors without scar. After creation of SFCs, mucosal incision around the tumors and submucosal dissection under the tumors were made by cutting devices. The clinical outcomes were investigated.
  
  
  RESULTS
  Mean resected and tumor sizes were 38.6 and 25.6 mm, respectively. Perforation occurred in one colon tumor with severe fibrosis (1.5%), which was managed by endoscopic clipping without salvage surgery. No blood transfusion was performed. In one stomach and in one rectal tumor (3%), endoscopic hemostasis was necessary because of postoperative bleeding. Overall endoscopic and histologic en bloc resection rates were 94% (63/67) and 78% (52/67), respectively, and there was no recurrence after follow-up of 1 year.
  
  
  CONCLUSIONS
  ESD when using a mixture of Suvenyl and Glyceol results in excellent outcomes, and this injection solution should be used for ESD.
authors.affiliation: Department of Gastroenterology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Fujishiro
authors.forename: Naohisa
authors.initials: N
authors.lastname: Yahagi
authors.forename: Masanori
authors.initials: M
authors.lastname: Nakamura
authors.forename: Naomi
authors.initials: N
authors.lastname: Kakushima
authors.forename: Shinya
authors.initials: S
authors.lastname: Kodashima
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ono
authors.forename: Katsuya
authors.initials: K
authors.lastname: Kobayashi
authors.forename: Takuhei
authors.initials: T
authors.lastname: Hashimoto
authors.forename: Nobutake
authors.initials: N
authors.lastname: Yamamichi
authors.forename: Ayako
authors.initials: A
authors.lastname: Tateishi
authors.forename: Yasuhito
authors.initials: Y
authors.lastname: Shimizu
authors.forename: Masashi
authors.initials: M
authors.lastname: Oka
authors.forename: Keiji
authors.initials: K
authors.lastname: Ogura
authors.forename: Takao
authors.initials: T
authors.lastname: Kawabe
authors.forename: Masao
authors.initials: M
authors.lastname: Ichinose
authors.forename: Masao
authors.initials: M
authors.lastname: Omata
mesh_terms: D000276:Adjuvants, Immunologic / Q000008:administration & dosage; D003451:Cryoprotective Agents / Q000008:administration & dosage; D004210:Dissection / Q000379:methods*; D004338:Drug Combinations; D016099:Endoscopy, Gastrointestinal / Q000379:methods*; D005500:Follow-Up Studies; D005632:Fructose / Q000008:administration & dosage*; D005770:Gastrointestinal Neoplasms / Q000473:pathology / Q000601:surgery*; D005990:Glycerol / Q000008:administration & dosage*; D006801:Humans; D006820:Hyaluronic Acid / Q000008:administration & dosage*; D007267:Injections; D007413:Intestinal Mucosa / Q000473:pathology / Q000601:surgery*; D012189:Retrospective Studies; D013549:Sweetening Agents / Q000008:administration & dosage; D016896:Treatment Outcome
chemical_list: D000276:Adjuvants, Immunologic; D003451:Cryoprotective Agents; D004338:Drug Combinations; D013549:Sweetening Agents; D005632:Fructose; D006820:Hyaluronic Acid; D005990:Glycerol