title: A two-step method for marking polypectomy sites in the colon and rectum.
abstract: BACKGROUND
  Intraoperative localization of polypectomy sites is critical for laparoscopic and open surgery, but conventional methods of marking the colorectum are sometimes unreliable. A new two-step method for marking polypectomy sites for identification during laparoscopic and open operations is described.
  
  
  METHODS
  Eighteen patients with postpolypectomy lesions necessitating preoperative marking were enrolled in this study. A physiologic saline solution was endoscopically injected into the submucosa to produce an artificial submucosal elevation (pseudopolyp). A small volume of India ink was then injected into the submucosal elevation (pseudopolyp) with a separate needle.
  
  
  RESULTS
  The two-step method was easily applied for all lesions without complication. At surgery, all lesions were immediately visualized.
  
  
  CONCLUSIONS
  The two-step tattooing method proved to be easy, safe, and accurate for marking polypectomy sites.
authors.affiliation: Department of Gastroenterology, Aichi Cancer Center Hospital, Nagoya, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Sawaki
authors.forename: Tsuneya
authors.initials: T
authors.lastname: Nakamura
authors.forename: Takashi
authors.initials: T
authors.lastname: Suzuki
authors.forename: Kazuo
authors.initials: K
authors.lastname: Hara
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Kato
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Kato
authors.forename: Takashi
authors.initials: T
authors.lastname: Hirai
authors.forename: Yukihide
authors.initials: Y
authors.lastname: Kanemitsu
authors.forename: Kenji
authors.initials: K
authors.lastname: Okubo
authors.forename: Kyosuke
authors.initials: K
authors.lastname: Tanaka
authors.forename: Ichiro
authors.initials: I
authors.lastname: Moriyama
authors.forename: Hiroki
authors.initials: H
authors.lastname: Kawai
authors.forename: Masaki
authors.initials: M
authors.lastname: Katsurahara
authors.forename: Kakuya
authors.initials: K
authors.lastname: Matsumoto
authors.forename: Kenji
authors.initials: K
authors.lastname: Yamao
mesh_terms: D000368:Aged; D002244:Carbon; D003111:Colonic Polyps / Q000601:surgery; D003113:Colonoscopy; D004396:Coloring Agents / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007417:Intestinal Polyps / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D013653:Tattooing / Q000379:methods*
chemical_list: D004396:Coloring Agents; C028433:chinese ink; D002244:Carbon