OC.02.2 LAPAROSCOPIC-ENDOSCOPIC COOPERATIVE SURGERY (LECS) FOR FULL THICKNESS RESECTION OF GASTROINTESTINAL STROMAL TUMORS (GISTS). (March 2023) - Tomba, F.; Massella, A.; Giacopuzzi, S.; Bencivenga, M.; Cerofolini, A.; Togliani, T.; Rodella, L.; De Manzoni, G.