title: Audit of a Barrett's epithelium surveillance database.
abstract: BACKGROUND
  Barrett's epithelium is a premalignant condition in which endoscopic surveillance is recommended but remains contentious.
  
  
  OBJECTIVE
  To audit our Barrett's epithelium surveillance database and to calculate the incidence and natural history of dysplasia and cancer in this cohort.
  
  
  METHODS
  A retrospective analysis of a computerised database of patients with columnar lined oesophagus containing specialised intestinal metaplasia was undertaken over a 5-year period. The surveillance protocol was annual endoscopy with 2-cm interval quadrantic biopsies with patients on continuous acid-suppression therapy.
  
  
  RESULTS
  A total of 138 (102 men) patients underwent active surveillance. The mean age was 62.1 years and the mean Barrett's epithelium length was 5.9 cm. Ten patients had low-grade dysplasia, with a mean age of 73.5 years, a mean Barrett's epithelium length of 7.8 cm, a prevalence of 7.2% over 5 years and an incidence of 1.4% per annum. Low-grade dysplasia regressed in five patients, persisted in four patients, and was associated with a concurrent squamous carcinoma in one patient. Three patients had high-grade dysplasia at index endoscopy, with no incident cases. One progressed to adenocarcinoma after 2 years. A cancer incidence of one per 202 patient-years of surveillance was found, equivalent to 0.5% per year.
  
  
  CONCLUSIONS
  Short-interval (1-year) endoscopic surveillance of Barrett's epithelium offers little reward. Low-grade dysplasia is uncommon, and no progression to adenocarcinoma was seen in this cohort. No incident high-grade dysplasia was observed. Prospective evaluation of a longer endoscopic surveillance interval in controlled clinical studies is warranted.
authors.affiliation: Digestive Diseases Centre, University Hospitals of Leicester, Leicester, UK.
authors.forename: K K
authors.initials: KK
authors.lastname: Basu
authors.forename: B
authors.initials: B
authors.lastname: Pick
authors.forename: J S
authors.initials: JS
authors.lastname: de Caestecker
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001471:Barrett Esophagus / Q000150:complications / Q000453:epidemiology / Q000473:pathology*; D001706:Biopsy / Q000379:methods; D016208:Databases, Factual; D004938:Esophageal Neoplasms / Q000175:diagnosis / Q000453:epidemiology / Q000473:pathology; D004945:Esophagoscopy / Q000379:methods; D004947:Esophagus / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008485:Medical Audit / Q000379:methods*; D008679:Metaplasia / Q000473:pathology; D008875:Middle Aged; D011159:Population Surveillance / Q000379:methods; D011230:Precancerous Conditions / Q000175:diagnosis / Q000453:epidemiology / Q000473:pathology; D015995:Prevalence; D012189:Retrospective Studies