title: [Evaluation of Gastric Atrophy. Comparison between Sidney and OLGA Systems].
abstract: BACKGROUND
  histopathologic identification of atrophy and metaplasia is decisive to stop the way of gastritis?carcinoma in patients with chronic gastritis.
  
  
  OBJECTIVE
  to compare diagnostic concordance between Sidney system and the operative Link on Gastritis Assessment (OLGA) system.
  
  
  METHODS
  120 consecutive biopsies were analyzed by general pathologists according to the Sidney system. All of them were evaluated by a second pathologist who used OLGA System. We employed kappa index to evaluate diagnostic concordance between the classifications.
  
  
  RESULTS
  the clinical picture includes dyspepsia (94 %), abdominal pain (50 %), gastroesophageal reflux (30 %), bleed of the upper digestive system (24 %), and presence of Helicobacter pylori (47.5 %). Four were diagnosed as atrophy by Sidney system and 26 cases with atrophy by OLGA system. The concordance between two classifications systems was too low (p = 0.05).
  
  
  CONCLUSIONS
  the atrophy diagnosis, between systems, had low concordance. The description of metaplastic atrophy in the OLGA system represents the only one difference. The non-metaplastic atrophy is the same for both classifications. Therefore, the general pathologist should include this evaluation more consistently using OLGA system.
authors.affiliation: Servicio de Anatomía Patológica, Unidad Médica de Alta Especialidad, Hospital de Especialidades, Centro Médico Nacional, La Raza, Mexico. ramenpablo@hotmail.com
authors.forename: Pablo
authors.initials: P
authors.lastname: Ramírez-Mendoza
authors.forename: Jorge
authors.initials: J
authors.lastname: González-Angulo
authors.forename: Ulises
authors.initials: U
authors.lastname: Angeles-Garay
authors.forename: Gustavo Adolfo
authors.initials: GA
authors.lastname: Segovia-Cueva
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001284:Atrophy / Q000453:epidemiology / Q000382:microbiology / Q000473:pathology; D001315:Australia / Q000453:epidemiology; D002391:Catchment Area, Health; D005260:Female; D005756:Gastritis / Q000453:epidemiology / Q000382:microbiology; D005762:Gastroenterology / Q000379:methods*; D016481:Helicobacter Infections / Q000150:complications / Q000453:epidemiology; D016480:Helicobacter pylori / Q000302:isolation & purification; D006801:Humans; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D013270:Stomach / Q000382:microbiology / Q000473:pathology*; D055815:Young Adult