title: Healing of lymphocytic gastritis by eradication of Helicobacter pylori.
abstract: BACKGROUND
  It is not yet clear whether lymphocytic gastritis might not be a sequela of Helicobacter pylori (Hp) infection. The aim of the present pilot study was, therefore, to investigate whether lymphocytic gastritis can be cured by Hp eradication, which, if affirmed, would provide indirect evidence for an etiopathogenic relationship.
  
  
  METHODS
  98 of 220 patients with lymphocytic gastritis diagnosed between 1988 and 1998 were investigated at least twice, with 61 of them undergoing Hp eradication treatment. In 29 of these patients, the pretreatment histological work-up using the Warthin-Starry silver stain revealed Hp colonisation, while in the remaining 32 patients the biopsies from the antrum and corpus were negative for Hp. The other 37 patients received no treatment, and served as a control group.
  
  
  RESULTS
  Both in the group with Hp-positive, and in the group with Hp-negative histology prior to treatment, eradication treatment led to healing of the gastritis, i.e. to regression of the gastritis parameters including normalisation of the intra-epithelial lymphocyte count, in 93.1% and 84.3% of the cases, respectively. In the control group the histological findings did not change.
  
  
  CONCLUSIONS
  The results of our retrospective study support the notion that most cases of lymphocytic gastritis might be a consequence of Hp infection. This, however, needs to be clarified definitively by a prospective, randomized, double-blind study.
authors.affiliation: Institute of Pathology, Klinikum Bayreuth, D-95445 Bayreuth, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Müller
authors.forename: H
authors.initials: H
authors.lastname: Volkholz
authors.forename: M
authors.initials: M
authors.lastname: Stolte
mesh_terms: D000368:Aged; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D005260:Female; D005756:Gastritis / Q000209:etiology / Q000382:microbiology* / Q000473:pathology; D016481:Helicobacter Infections / Q000150:complications* / Q000188:drug therapy*; D016480:Helicobacter pylori / Q000472:pathogenicity*; D006801:Humans; D008214:Lymphocytes; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D000900:Anti-Bacterial Agents