title: [Endoscopic location of squamous columnar mucosal changes in patients with different degrees of pathologic gastroesophageal reflux].
abstract: BACKGROUND
  There is little information about the precise location of the squamous columnar mucosal junction in the Chilean population.
  
  
  OBJECTIVE
  To study endoscopically, the location of the squamous columnar mucosal junction in patients with esophageal disease.
  
  
  METHODS
  The location of the squamous columnar mucosal junction was prospectively studied by endoscopy in 347 subjects with normal upper gastrointestinal endoscopy, 117 patients with chronic gastroesophageal reflux without esophagitis, 117 patients with erosive esophagitis, 63 patients with short Barret's esophagus and 28 patients with an extensive Barret's esophagus.
  
  
  RESULTS
  No differences in the mucosal junction location were observed between controls and patients with gastroesophageal reflux or erosive esophagitis. In patients with Barret's esophagus, the junction was more proximal. In women, the junction was three cm more proximal than in men, probably due to their shorter stature.
  
  
  CONCLUSIONS
  Women have a more proximal squamous columnar mucosal junction than men.
authors.affiliation: Departamento de Cirugía, Hospital Clínico de la Universidad de Chile, Santiago de Chile.
authors.forename: A
authors.initials: A
authors.lastname: Csendes
authors.forename: M
authors.initials: M
authors.lastname: Coronel
authors.forename: R
authors.initials: R
authors.lastname: Avendaño
authors.forename: H
authors.initials: H
authors.lastname: Córdova
authors.forename: G
authors.initials: G
authors.lastname: Zenteno
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016145:Endoscopy, Digestive System; D004943:Esophagogastric Junction / Q000473:pathology*; D005260:Female; D005753:Gastric Mucosa / Q000473:pathology*; D005764:Gastroesophageal Reflux / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012720:Severity of Illness Index