title: [Helicobacter pylori infection in the remnant stomach after radical subtotal gastrectomy].
abstract: OBJECTIVE
  It was reported that the prevalence of Helicobacter pylori (H. pylori) infection decreased after gastrectomy, but persistent H. pylori infection may cause residual gastritis or stump cancer. We studied the prevalence of H. pylori infection in patients who had undergone subtotal gastrectomy for the treatment of gastric cancer and the factors that influence H. pylori positivity in the remnant stomach.
  
  
  METHODS
  Ninety-eight patients who had undergone radical subtotal gastrectomy (RSG group) for the treatment of gastric cancer and eighty-four patients diagnosed as having gastric cancer (GC group) were enrolled. H. pylori status was diagnosed by rapid urease test, histological examination, and 13C-urea breath test. We evaluated whether there were differences in various clinical characteristics according to the H. pylori status in the remnant stomach.
  
  
  RESULTS
  The prevalences of H. pylori infection in RSG group and GC group were 55% and 69%, respectively. In RSG group, the prevalence of H. pylori was 76.9% in patients aged 49 or less, and it decreased with age. The prevalence of H. pylori within 3 years of gastrectomy was 59.5% and it decreased to 28.6% after 3 years of gastrectomy.
  
  
  CONCLUSIONS
  The positive rate of H. pylori in RSG group is lower than that in GC group and decreases with age and time interval after operation.
authors.affiliation: Department of Internal Medicine, Gachon Medical School, Namdong-gu, Incheon, Korea.
authors.forename: Eun Soo
authors.initials: ES
authors.lastname: Kim
authors.forename: Dong Kyun
authors.initials: DK
authors.lastname: Park
authors.forename: Soon Hong
authors.initials: SH
authors.lastname: Hong
authors.forename: Moon Gi
authors.initials: MG
authors.lastname: Chung
authors.forename: Oh Sang
authors.initials: OS
authors.lastname: Kwon
authors.forename: Sun Suk
authors.initials: SS
authors.lastname: Kim
authors.forename: Yang Seo
authors.initials: YS
authors.lastname: Koo
authors.forename: You Kyoung
authors.initials: YK
authors.lastname: Kim
authors.forename: Dong Hoon
authors.initials: DH
authors.lastname: Kang
authors.forename: Duck Joo
authors.initials: DJ
authors.lastname: Choi
authors.forename: Hyun Chul
authors.initials: HC
authors.lastname: Park
authors.forename: Woon Gi
authors.initials: WG
authors.lastname: Lee
authors.forename: Ju Hyun
authors.initials: JH
authors.lastname: Kim
mesh_terms: D000368:Aged; D005260:Female; D005743:Gastrectomy; D018530:Gastric Stump; D016481:Helicobacter Infections / Q000175:diagnosis*; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D008297:Male; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000382:microbiology* / Q000601:surgery