title: Mucosal patterns of Helicobacter pylori-related gastritis without atrophy in the gastric corpus using standard endoscopy.
abstract: OBJECTIVE
  To identify the mucosal patterns of Helicobacter pylori (H. pylori)-related gastritis in the gastric corpus using standard endoscopy and to evaluate their reproducibility.
  
  
  METHODS
  A total of 112 consecutive patients underwent upper gastrointestinal endoscopy. The endoscopists classified the endoscopic findings into 4 patterns. In the second part of the study, 90 images were shown to 3 endoscopists in order to evaluate the inter-observer and intra-observer variability in image assessment.
  
  
  RESULTS
  The mucosal patterns of the gastric body were categorized into 4 types. Type 1 pattern was defined as cleft-like appearance, type 2 as regular arrangement of red dots, type 3 pattern as the mosaic mucosal pattern and type 4 pattern as the mosaic pattern with a focal area of hyperemia. Type 1 and type 2 mucosal patterns were statistically significant in predicting H. pylori-negative status as compared with other mucosal types (chi(2) = 12.79 and 61.25 respectively, P < 0.01). Type 3 and type 4 mucosal patterns were statistically significant in predicting a H. pylori-positive status as compared with other mucosal types (chi(2) = 21.22 and 11.02 respectively, P < 0.01). Furthermore, the sensitivity, specificity, positive and negative predictive values of type 3 plus type 4 patterns for predicting H. pylori-positive gastric mucosa were 100%, 86%, 94%, and 100%, respectively. The mean kappa values for inter- and intra-observer agreement in assessing the various endoscopic patterns were 0.808 (95% CI, 0.678-0.938) and 0.826 (95% CI, 0.727-0.925) respectively.
  
  
  CONCLUSIONS
  Our study suggests that mucosal patterns in H. pylori-infected gastric mucosa without atrophy can be reliably identified using standard endoscopy in the gastric corpus.
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, Chang Bing Show-Chwan Memorial Hospital, No. 6, Lugong Rd., Lugang Township, Changhua County 505, Taiwan, China.
authors.forename: Sheng-Lei
authors.initials: SL
authors.lastname: Yan
authors.forename: Shwu-Tzy
authors.initials: ST
authors.lastname: Wu
authors.forename: Chien-Hua
authors.initials: CH
authors.lastname: Chen
authors.forename: Yeh-Huang
authors.initials: YH
authors.lastname: Hung
authors.forename: Tsung-Hsun
authors.initials: TH
authors.lastname: Yang
authors.forename: Vun-Siew
authors.initials: VS
authors.lastname: Pang
authors.forename: Yung-Hsiang
authors.initials: YH
authors.lastname: Yeh
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005753:Gastric Mucosa / Q000473:pathology*; D005756:Gastritis / Q000145:classification / Q000473:pathology*; D005773:Gastroscopy; D016481:Helicobacter Infections / Q000473:pathology*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D055815:Young Adult