title: Transanal single port microsurgery (TSPM) as a modified technique of transanal endoscopic microsurgery (TEM).
abstract: BACKGROUND
  Single port access (SPA) surgery is a new procedure for minimal invasive surgery using one multichannel port. The authors adapted this technique for transanal surgery as an improvement of the transanal endoscopic microsurgery (TEM).
  
  
  METHODS
  A total of 3 patients underwent SPA modified TEM using the SILS port (Covidien) under CO(2) insufflation. This port allows insertion of 2 laparoscopic instruments and a telescope.
  
  
  RESULTS
  The operation was completed successfully in all cases. The transanal placement of the SILS port was easy to perform; a prior dilatation of the anal sphincter was not necessary. There were no perioperative or postoperative complications as verified by postoperative observation, rectoscopy, and anal ultrasound.
  
  
  CONCLUSIONS
  Transanal single port microsurgery is a feasible and new technique for less invasive and more gentle transanal surgery. By using this new multichannel device TEM surgery was changed in a modified way while preserving the anal sphincter.
authors.affiliation: Department of General and Visceral Surgery and Minimal Invasive Surgery, Luth. Amalie Sieveking-Hospital, Hamburg, Germany. c.lorenz@amalie.de
authors.forename: Cornelia
authors.initials: C
authors.lastname: Lorenz
authors.forename: Thomas
authors.initials: T
authors.lastname: Nimmesgern
authors.forename: Melanie
authors.initials: M
authors.lastname: Back
authors.forename: Thomas E
authors.initials: TE
authors.lastname: Langwieler
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001003:Anal Canal / Q000601:surgery*; D006801:Humans; D007417:Intestinal Polyps / Q000601:surgery*; D008866:Microsurgery; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000295:instrumentation*; D011351:Proctoscopy / Q000379:methods*; D012004:Rectal Neoplasms / Q000601:surgery*