title: Systematic review: does gastro-oesophageal reflux disease progress?
abstract: BACKGROUND
  Gastro-oesophageal reflux disease affects approximately 20% of western populations. Barrett's oesophagus, associated with severe gastro-oesophageal reflux disease, is premalignant and regular endoscopic surveillance is generally performed. In contrast, mild gastro-oesophageal reflux disease is thought not to progress and is not generally subjected to endoscopic follow-up. Aim To investigate whether gastro-oesophageal reflux disease progresses endoscopically.
  
  
  METHODS
  Systematic review of the literature.
  
  
  RESULTS
  Well-designed prospective studies are few, diagnostic criteria were not always standardized, management strategies varied and various sources of bias could not be excluded. Whilst most patients do not progress to more severe forms of gastro-oesophageal reflux disease, and some cases actually regress, progression is seen in a small proportion of patients. Annual progression rates for non-erosive gastro-oesophageal reflux disease developing erosive oesophagitis ranged from 0% to 30%. About 1-22% of patients with mild erosive oesophagitis developed more severe inflammation annually, while 1-13% of patients with erosive oesophagitis developed Barrett's oesophagus each year.
  
  
  CONCLUSIONS
  Although most patients with gastro-oesophageal reflux disease do not progress, and some actually regress, progression does occur in a minority. Better data are required to determine whether patients with mild gastro-oesophageal reflux disease would benefit from increased surveillance with the aim of detecting more advanced disease.
authors.affiliation: Department of Gastroenterology, St George's Hospital, London, UK.
authors.forename: M
authors.initials: M
authors.lastname: Fullard
authors.forename: J Y
authors.initials: JY
authors.lastname: Kang
authors.forename: P
authors.initials: P
authors.lastname: Neild
authors.forename: A
authors.initials: A
authors.lastname: Poullis
authors.forename: J D
authors.initials: JD
authors.lastname: Maxwell
mesh_terms: D018450:Disease Progression; D016099:Endoscopy, Gastrointestinal / Q000379:methods; D004941:Esophagitis / Q000209:etiology / Q000628:therapy; D005764:Gastroesophageal Reflux / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D006801:Humans