title: Atrophic and Metaplastic Progression in the Background Mucosa of Patients with Gastric Adenoma.
abstract: BACKGROUND
  In patients with adenoma, assessing premalignant changes in the surrounding mucosa is important for surveillance. This study evaluated atrophic and metaplastic progression in the background mucosa of adenoma or early gastric cancer (EGC) cases.
  
  
  METHODS
  Among 146 consecutive patients who underwent endoscopic resection for intestinal-type gastric neoplasia, the adenoma group included 56 patients with low-grade dysplasia and the ECG group included 90 patients with high-grade dysplasia or invasive carcinoma. For histology, 3 paired biopsies were obtained from the antrum, corpus lesser curvature (CLC), and corpus greater curvature (CGC). Serological atrophy was determined based on pepsinogen A (PGA), progastricsin (PGC), gastrin-17, and total ghrelin levels. Topographic progression of atrophy and/or metaplasia was staged using the operative link on gastritis assessment (OLGA) and operative link on gastric intestinal metaplasia assessment (OLGIM) systems.
  
  
  RESULTS
  Rates of moderate-to-marked histological atrophy/metaplasia in patients with adenoma were 52.7%/78.2% at the antrum (vs. 58.8%/76.4% in EGC group), 63.5%/75.0% at the CLC (vs. 60.2%/69.7% in EGC group), and 10.9%/17.9% at the CGC (vs. 5.6%/7.8% in EGC group). Serological atrophy indicated by PGA and PGC occurred in 23.2% and 15.6% of cases in the adenoma and ECG groups, respectively (p = 0.25). Mean serum gastrin-17 concentrations of the adenoma group and EGC group were 10.4 and 9.0 pmol/L, respectively (p = 0.54). Mean serum total ghrelin levels were 216.6 and 209.5 pg/mL, respectively (p = 0.71). Additionally, between group rates of stage III-IV OLGA and OLGIM were similar (25.9% vs. 25.0%, p = 0.90; 41.8% vs. 44.9%, p = 0.71, respectively).
  
  
  CONCLUSIONS
  Atrophic and metaplastic progression is extensive and severe in gastric adenoma patients. A surveillance strategy for metachronous tumors should be applied similarly for patients with adenoma or EGC.
authors.affiliation: Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Hee Kyong
authors.initials: HK
authors.lastname: Na
authors.affiliation: Department of Biomedical Science, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Charles J
authors.initials: CJ
authors.lastname: Cho
authors.affiliation: Health Screening and Promotion Center, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Suh Eun
authors.initials: SE
authors.lastname: Bae
authors.affiliation: Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Jeong Hoon
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Young Soo
authors.initials: YS
authors.lastname: Park
authors.affiliation: Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Ji Yong
authors.initials: JY
authors.lastname: Ahn
authors.affiliation: Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Do Hoon
authors.initials: DH
authors.lastname: Kim
authors.affiliation: Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Kee Don
authors.initials: KD
authors.lastname: Choi
authors.affiliation: Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Ho June
authors.initials: HJ
authors.lastname: Song
authors.affiliation: Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Gin Hyug
authors.initials: GH
authors.lastname: Lee
authors.affiliation: Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Se Jin
authors.initials: SJ
authors.lastname: Jang
authors.affiliation: Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea.
authors.forename: Hwoon-Yong
authors.initials: HY
authors.lastname: Jung
mesh_terms: D000236:Adenoma / Q000209:etiology / Q000378:metabolism / Q000473:pathology*; D000368:Aged; D015415:Biomarkers; D018450:Disease Progression; D005260:Female; D005500:Follow-Up Studies; D005753:Gastric Mucosa / Q000378:metabolism / Q000473:pathology*; D005755:Gastrins / Q000378:metabolism; D005757:Gastritis, Atrophic / Q000378:metabolism / Q000473:pathology*; D006801:Humans; D008297:Male; D008679:Metaplasia; D008875:Middle Aged; D016609:Neoplasms, Second Primary / Q000209:etiology / Q000378:metabolism; D020115:Pepsinogen C / Q000378:metabolism; D012307:Risk Factors; D013274:Stomach Neoplasms / Q000209:etiology / Q000378:metabolism / Q000473:pathology*
chemical_list: D015415:Biomarkers; D005755:Gastrins; C013550:gastrin 17; D020115:Pepsinogen C