OC.03.2 CLAUDIN 18 EXPRESSION IN SMALL BOWEL ADENOCARCINOMA IS ASSOCIATED WITH NON-COELIAC ETIOLOGY AND GASTRIC FOVEOLAR DIFFERENTIATION. (May 2022) - Lenti, M.V.; Guerini, C.; Arpa, G.; Quaquarini, E.; Angerilli, V.; Rossi, C.; Lonardi, S.; Paulli, M.; Vanoli, A.; Fassan, M.; Di Sabatino, A.