[Gastric polyps. Experience at the department of endoscopy of the Salvador Zubirán National Institute of Nutrition]. / Pólipos gástricos. Experiencia en el Departamento de Endoscopia del Instituto Nacional de la Nutrición Salvador Zubirán.

During 1981-1989 we seen 54 patients with gastric polyps in the Instituto Nacional de la Nutrición SZ, Endoscopy Dept., México City. We found 100 polyps among 15,974 upper endoscopy studies (0.33%), being multiple in 22 patients with an overall of 68 polyps. Females had a predominance of 2:1 with prevalence from the 5th to 8th decades. All were asymptomatic in regard to polyps. Its main locations were in antrum (46%) and corpus (39%). They measured an average of 8 mm with a range from 5 to 25. Only three adenomatous polyps shows dysplastic changes, two with moderate dysplasia and one, bigger than 20 mm, had severe dysplasia (carcinoma in situ). Histological findings were: Inflammatory (chronic gastritis) 30%, adenomatous 22%, hyperplastic 17% and hamartomatous 13%. In seven patients we seen recurrence at follow up.