Prognosis and Risk Factors of Gastric Cancer in Patients With Intestinal Metaplasia

This prospective cohort study aims to assess the incidence of gastric cancer in patients with intestinal metaplasia in body of stomach or angular incisure. As secondary objectives, among the patients included in the cohort, the study will: * assess the incidence of low grade dysplasia, * assess the incidence of high grade dysplasia in patients with low grade dysplasia, * identify risk factors of progression to dysplasia and gastric cancer.