This prospective multicenter study investigates the added benefit of incisura biopsy to correct identification of patients with high-risk chronic gastritis (OLGA stages III-IV). It compares a biopsy protocol with and without a single incisura biopsy in a non-inferiority design. Anonymized photo and videodocumentation according to institution practices will constitute a databank for lesion recognition, quality improvement, and potential AI development.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
prevalence of OLGA III-IV
Timeframe: at time of enrollment