 MATERIALS AND METHODS: National multicenter retrospective study. Mailing-SEED partners. Participation: 17 Spanish centers. Inclusion period: April 2003 to April 2016 Inclusion criteria: All AG Left Right punctured by EUS. Variables reviewed: Demographic characteristics, clinical, extension studies, USE and pathological data. Comparison between variables; and estimation of multivariate logistic model for cytology, mortality and therapeutic change. 