title: Endoscopic and histological comparison of nonulcer dyspepsia with and without Helicobacter pylori infection evaluated by the modified Sydney system.
abstract: OBJECTIVE
  Our aim was to identify endoscopic features associated with Helicobacter pylori (H. pylori) infection in patients with nonulcer dyspepsia.
  
  
  METHODS
  A total of 50 infected patients with nonulcer dyspepsia who underwent endoscopy with antral and corporal biopsies and 50 patients matched for age and sex but with nonulcer dyspepsia without H. pylori were reviewed retrospectively by three endoscopists blinded to the H. pylori status and the patient's history. The endoscopic findings of gastritis, classified by a modification of the Sydney system as present or absent, were evaluated, and the histological severity was graded by the updated Sydney system.
  
  
  RESULTS
  For endoscopic features, the odds ratio was 53.1 (95% confidence interval, 6.8-414.9) for edema, 18.8 (5.8-60.5) for erythema with reddish streaks excluded, 0.0275 (0.0002-0.477) for reddish streaks, 17.4 (0.97-313.7) for friability, 14.2 (5.1-40.0) for exudate, 17.2 (2.2-137.6) for flat erosions, 2.54 (0.81-7.94) for raised erosions, 40.1 (2.3-694.5) for rugal hypertrophy, 19.1 (2.4-151.6) for rugal atrophy, 96.2 (23.4-395.9) for a vascular pattern, 0.125 (0.010-1.06) for bleeding spots, and 21.0 (2.6-166.5) for nodularity. The histological severity of inflammation, neutrophil activity, and atrophy in the antrum and corpus and of metaplasia in the antrum was greater in the infected patients than in the noninfected patients.
  
  
  CONCLUSIONS
  Endoscopic features associated with H. pylori were a vascular pattern, edema, rugal hypertrophy, nodularity, rugal atrophy, erythema with reddish streaks excluded, flat erosions, and exudate. These endoscopic features were associated with the histological findings of inflammation, neutrophil activity, atrophy, and metaplasia.
authors.affiliation: First Department of Internal Medicine, School of Medicine, Tokyo Medical and Dental University, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Ohkusa
authors.forename: K
authors.initials: K
authors.lastname: Fujiki
authors.forename: I
authors.initials: I
authors.lastname: Takashimizu
authors.forename: J
authors.initials: J
authors.lastname: Kumagai
authors.forename: T
authors.initials: T
authors.lastname: Tanizawa
authors.forename: Y
authors.initials: Y
authors.lastname: Eishi
mesh_terms: D001284:Atrophy / Q000473:pathology; D001706:Biopsy; D003937:Diagnosis, Differential; D004415:Dyspepsia / Q000209:etiology / Q000473:pathology*; D016145:Endoscopy, Digestive System; D005260:Female; D005753:Gastric Mucosa / Q000382:microbiology / Q000473:pathology*; D005756:Gastritis / Q000150:complications / Q000382:microbiology / Q000473:pathology*; D016481:Helicobacter Infections / Q000150:complications* / Q000382:microbiology / Q000473:pathology; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D006984:Hypertrophy / Q000473:pathology; D008297:Male; D008679:Metaplasia / Q000473:pathology; D008875:Middle Aged; D009504:Neutrophils / Q000473:pathology; D016017:Odds Ratio; D011379:Prognosis; D015203:Reproducibility of Results; D012189:Retrospective Studies