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Revista colombiana de Gastroenterología

versão impressa ISSN 0120-9957

Resumo

MARTINEZ, Diana; OTERO, William  e  RICAURTE, Orlando. A Case and Control Study of the OLGA System’s Impact on Detection of Chronic Atrophic Gastritis in Colombia. Rev Col Gastroenterol [online]. 2016, vol.31, n.4, pp.360-367. ISSN 0120-9957.

Introduction: Chronic atrophic gastritis (GCA) is a clinicopathological entity related to intestinal type gastric cancer (GC) whose main cause is helicobacter pylori. Currently, in addition to the diagnosis, it is recommended that the extent of atrophy or intestinal metaplasia be evaluated in order to stage the GC risk. The most accurate method for atrophy is OLGA which requires five biopsies: two from the corpus, two from the antrum and one from the angular incisure. Each biopsy is marked placed in a separate tube and marked. In Colombia, the use of OLGA to study gastric atrophy had not been evaluated previously. Materials and methods: This is a case and control study whose cases are patients who had biopsies taken to be studied with OLGA. Control patients had less than five gastric biopsies, without OLGA sampling. Results: This study includes 1,599 cases and 4,191 controls. The average age of cases was 49 +/- 12 years, and the average age of controls was 54 +/- 10 years (p: NS). H. pylori infections were found in 60% of the cases and in 57% of the controls while 42% of the cases were found to have gastric cancer and 26% of the cases were found to have GC. 12.3% had OLGA III or IV and 88% had OLGA 0, I or II and did not merit endoscopic monitoring. Conclusion: The OLGA system detects 61.8% more atrophy than is detected with less sampling of gastric biopsies. Most of the cases (88%) had low risk of GC (stages 0-II) and did not require endoscopic monitoring

Palavras-chave : Atrophic gastritis; intestinal metaplasia; helicobacter pylori; Sidney system; OLGA system.

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