AF.107 ROLE OF CHROMOGRANIN A-DERIVED FRAGMENTS IN THE ASSESSMENT OF SURGICAL EFFICACY AFTER RESECTION OF NONFUNCTIONING PANCREATIC NEUROENDOCRINE TUMORS. (September 2021) - Andreasi, V.; Partelli, S.; Manzoni, M.; Colombo, B.; Muffatti, F.; Corti, A.; Falconi, M.