title: Gastric mucosal pattern by using magnifying narrow-band imaging endoscopy clearly distinguishes histological and serological severity of chronic gastritis.
abstract: BACKGROUND
  Magnifying narrow-band imaging (NBI) endoscopy clearly visualizes superficial gastric mucosal patterns and capillary patterns.
  
  
  OBJECTIVE
  To investigate gastric mucosal patterns by using magnifying NBI endoscopy and identify any relationship between those patterns and Helicobacter pylori-induced gastritis.
  
  
  METHODS
  Gastric mucosal patterns seen with magnifying NBI in uninvolved gastric corpus were divided into the following categories: normal--small, round pits with regular subepithelial capillary networks; type 1-slightly enlarged, round pits with unclear or irregular subepithelial capillary networks; type 2--obviously enlarged, oval or prolonged pits with increased density of irregular vessels; and type 3-well--demarcated oval or tubulovillous pits with clearly visible coiled or wavy vessels.
  
  
  METHODS
  Department of Gastroenterology, Fujita Health University.
  
  
  METHODS
  This study involved 106 participants undergoing upper endoscopy.
  
  
  RESULTS
  H pylori infection-positive ratios of normal and types 1, 2, and 3 patterns were 7.5%, 92.9%, 94.5%, and 66.7%, respectively. Sensitivity and specificity for types 1 + 2 + 3 for detection of H pylori positivity and type 3 for detection of intestinal metaplasia were 95.2%, 82.2%, 73.3%, and 95.6%, respectively. Development of mucosal patterns from normal to types 1, 2, and 3 was correlated with all histological parameters (P < .0001), lower pepsinogen I/II ratios (P < .0001), and degree of endoscopic atrophy (P < .0001). Sensitivity and specificity of type 3 for the prediction of severe histological atrophy was also better than those of serum pepsinogen level and standard endoscopy.
  
  
  CONCLUSIONS
  Only 1 endoscopist performed endoscopic procedures, and interobserver agreement could not be assessed.
  
  
  CONCLUSIONS
  Magnifying NBI endoscopy is useful for predicting H pylori infection and the histological severity of gastritis and is valuable for predicting gastric atrophy in the entire stomach.
authors.affiliation: Department of Gastroenterology, Fujita Health University School of Medicine, Toyoake, Japan. tomomiccyu@yahoo.co.jp
authors.forename: Tomomitsu
authors.initials: T
authors.lastname: Tahara
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Shibata
authors.forename: Masakatsu
authors.initials: M
authors.lastname: Nakamura
authors.forename: Daisuke
authors.initials: D
authors.lastname: Yoshioka
authors.forename: Masaaki
authors.initials: M
authors.lastname: Okubo
authors.forename: Tomiyasu
authors.initials: T
authors.lastname: Arisawa
authors.forename: Ichiro
authors.initials: I
authors.lastname: Hirata
mesh_terms: D000368:Aged; D002196:Capillaries; D002908:Chronic Disease; D005260:Female; D005753:Gastric Mucosa / Q000098:blood supply* / Q000473:pathology*; D005756:Gastritis / Q000382:microbiology* / Q000473:pathology*; D005773:Gastroscopy; D016481:Helicobacter Infections / Q000473:pathology*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D011446:Prospective Studies; D012720:Severity of Illness Index