title: Long-term follow-up of gastric metaplasia after eradication of Helicobacter pylori.
abstract: OBJECTIVE
  There is no commonly accepted view concerning changes in gastric metaplasia after the eradication of Helicobacter pylori. The aim of this study was to evaluate the long-term course of gastric metaplasia after the eradication of this bacterium.
  
  
  METHODS
  The subjects were 59 patients with duodenal ulcer who were positive for Helicobacter pylori. Forty patients were classified as the eradication group. Gastric metaplasia was endoscopically and histologically evaluated before and after eradication of this bacterium. The follow-up period was 2-7.1 years. In the other 19 patients in the non-eradication group, gastric metaplasia was evaluated before and after treatment of the ulcer. Gastric metaplasia was evaluated in terms of its extent and type in all patients.
  
  
  RESULTS
  Gastric metaplasia showed the incomplete type before eradication but changed to the complete type after eradication, which persisted for a long period. The extent of gastric metaplasia increased after eradication. In the non-eradication group, gastric metaplasia infrequently changed to the complete type during the scarring period of ulcer.
  
  
  CONCLUSIONS
  Gastric metaplasia changed to the complete type after the eradication of Helicobacter pylori, which persisted for a long period.
authors.affiliation: Department of Gastroenterology, Urakami Gastro Clinic, Tokushima, Japan.
authors.forename: Yoshihito
authors.initials: Y
authors.lastname: Urakami
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Sano
mesh_terms: D053799:2-Pyridinylmethylsulfinylbenzimidazoles; D000328:Adult; D000368:Aged; D000658:Amoxicillin / Q000627:therapeutic use; D002921:Cicatrix / Q000209:etiology / Q000473:pathology; D003289:Convalescence; D004359:Drug Therapy, Combination / Q000627:therapeutic use; D004381:Duodenal Ulcer / Q000209:etiology / Q000473:pathology*; D004384:Duodenoscopy; D005260:Female; D005500:Follow-Up Studies; D005744:Gastric Acid; D005753:Gastric Mucosa / Q000473:pathology*; D005756:Gastritis / Q000150:complications / Q000188:drug therapy / Q000382:microbiology / Q000473:pathology*; D005773:Gastroscopy; D016481:Helicobacter Infections / Q000150:complications / Q000188:drug therapy / Q000473:pathology*; D016480:Helicobacter pylori; D006635:Histamine H2 Antagonists / Q000627:therapeutic use; D006801:Humans; D064747:Lansoprazole; D008297:Male; D008679:Metaplasia; D008795:Metronidazole / Q000627:therapeutic use; D008875:Middle Aged; D009093:Mucus / Q000378:metabolism; D009853:Omeprazole / Q000031:analogs & derivatives / Q000627:therapeutic use; D012720:Severity of Illness Index
chemical_list: D053799:2-Pyridinylmethylsulfinylbenzimidazoles; D006635:Histamine H2 Antagonists; D064747:Lansoprazole; D008795:Metronidazole; D000658:Amoxicillin; D009853:Omeprazole