title: Association of Helicobacter pylori infection with the development of colorectal polyps and colorectal carcinoma.
abstract: OBJECTIVE
  Recent studies have suggested a possible association between Helicobacter pylori (HP) infection and colon neoplasia. HP infection causes hypergastrinemia, and gastrin increases colorectal mucosal proliferation, potentially leading to colorectal cancer. We investigated whether HP infection is associated with colon neoplasia.
  
  
  METHODS
  We conducted a cross-sectional, single-center study in which patients who underwent routine outpatient colonoscopy and were tested for HP infection on esophagogastroduodenoscopy from January 1, 2008 to November 1, 2009 were identified. Patient demographic data (gender and age) and information on colon polyp characteristics (size, number of polyps, location, morphology, and histology) were abstracted from retrospective chart review. Presence of adenoma/carcinoma was compared in the HP-positive cases and HP-negative controls.
  
  
  RESULTS
  A total of 192 patients were included in the study, with 96 patients each in the HP-positive and -negative groups. The two groups did not differ significantly in gender, age, polyp size, number of polyps, polyp location, morphology, and histology. Adenomatous colon polyps were noted in 31% of the HP-positive cases and in 26% of the HP-negative controls (P = 0.52). Colon carcinoma was found in 6% of HP-positive and 2% of HP-negative patients (P = 0.28).
  
  
  CONCLUSIONS
  The higher prevalence of adenomatous colon polyps/carcinoma in HP-positive patients compared to HP-negative patients was not statistically significant. Larger studies are needed to examine further the potential association between HP infection and colorectal adenoma/carcinoma.
authors: Wright State University, Boonshoft School of Medicine, Dayton, OH, USA. drkhuramabbass@gmail.com
authors: Khurram
authors: K
authors: Abbass
authors: Waheed
authors: W
authors: Gul
authors: Gregory
authors: G
authors: Beck
authors: Ronald
authors: R
authors: Markert
authors: Salma
authors: S
authors: Akram
mesh_terms: D018256:Adenomatous Polyps / Q000150:complications* / Q000453:epidemiology / Q000473:pathology; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000150:complications* / Q000453:epidemiology / Q000473:pathology; D003110:Colonic Neoplasms / Q000150:complications* / Q000453:epidemiology / Q000473:pathology; D003111:Colonic Polyps / Q000150:complications* / Q000453:epidemiology / Q000473:pathology; D003113:Colonoscopy; D005260:Female; D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012189:Retrospective Studies; D012307:Risk Factors