[Reproducibility of histopathologic diagnosis of precursor lesions of gastric carcinoma in three Latin American countries].

Objective: The aim was to evaluate the concordance in the diagnosis of precursor lesions of intestinal-type gastric carcinoma among observers with different levels of experience.

Material And Methods: Gastric biopsies from 1 056 cases were studied: 341 from Colombia, 382 from Mexico, and 333 from Paraguay. Pathologists without experience (A) and with experience (B) in gastrointestinal pathology, as well as experts working in an international reference center (C) participated in the diagnosis of each case.