663 EUS-FNB WITH VERSUS WITHOUT ROSE: INTERIM ANALYSIS OF AN INTERNATIONAL RANDOMIZED NON-INFERIORITY STUDY.

The need for rapid on-site evaluation (ROSE) during EUS sampling of solid pancreatic lesions (SPLs) could be overcome by the high diagnostic accuracy of new fine needle biopsy (FNB) devices. We performed a randomized non-inferiority study comparing EUS-FNB with or without ROSE in a large cohort of patients with SPLs. Patients with SPLs were randomized to EUS-FNB+ROSE vs. EUS-FNB alone. The procedures were done using one of the available FNB...