OC.01.3 EUS-GUIDED TISSUE ACQUISITION IN CHRONIC PANCREATITIS: DIFFERENTIAL DIAGNOSIS BETWEEN PANCREATIC CANCER AND PSEUDOTUMORAL MASSES USING EUS-FINE NEEDLE ASPIRATION OR CORE BIOPSY. (1st October 2020) - Grassia, R.; Imperatore, N.; Capone, P.; Cereatti, F.; Forti, E.; Antonini, F.; Tanzi, G.P.; Martinotti, M.; Buffoli, F.; Mutignani, M.; Macarri, G.; Manes, G.; et al.