title: Outcome of endoscopy surveillance for Barrett's oesophagus.
abstract: BACKGROUND
  Endoscopic surveillance of individuals with Barrett's oesophagus is undertaken to detect early stage oesophageal malignancy. The impact of a surveillance programme on endoscopy resources and disease detection is uncertain.
  
  
  METHODS
  In 2004, we commenced a structured Barrett's oesophagus surveillance programme. The surveillance protocol specifies surveillance interval and number of oesophageal biopsies required according to previous endoscopy and biopsy findings. The first 3 years of surveillance were reviewed to assess programme adherence, impact on endoscopy resources and the incidence of high-grade dysplasia and adenocarcinoma in patients undergoing surveillance.
  
  
  RESULTS
  Four hundred five patients were enrolled in the surveillance programme, and 776 patient years of endoscopy follow-up were analysed. Four-quadrant biopsies every 2 cm throughout the Barrett's oesophagus were performed in 89.8% of endoscopies. A total of 93.7% of patients had surveillance endoscopy performed at the appropriate time interval. Formalizing surveillance was followed by a decrease in the mean time interval for endoscopy surveillance from 16 months to 15 months, although the mode endoscopy surveillance interval lengthened from 1 year to 2 years. The mean number of biopsies per endoscopy increased from 5.9 to 7. In four patients, T1 stage oesophageal adenocarcinoma was identified, and in six patients, high-grade dysplasia was identified (combined incidence of adenocarcinoma/high-grade dysplasia 1 per 77.6 endoscopy years of follow-up).
  
  
  CONCLUSIONS
  Structured Barrett's surveillance detects malignant progression at an early stage, which provides opportunities for curative surgical or endoscopic intervention. Formalizing surveillance resulted in a high rate of adherence to agreed guidelines and rationalized the use of endoscopy resources without significantly increasing workload.
authors.affiliation: Department of Surgery, Flinders University, Bedford Park South Australia, Australia. timandceacea@hotmail.com
authors.forename: Tim
authors.initials: T
authors.lastname: Bright
authors.forename: Ann
authors.initials: A
authors.lastname: Schloithe
authors.forename: Jeff A
authors.initials: JA
authors.lastname: Bull
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Fraser
authors.forename: Peter
authors.initials: P
authors.lastname: Bampton
authors.forename: David I
authors.initials: DI
authors.lastname: Watson
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001471:Barrett Esophagus / Q000175:diagnosis* / Q000473:pathology; D002985:Clinical Protocols; D018450:Disease Progression; D004724:Endoscopy; D004938:Esophageal Neoplasms / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D055815:Young Adult