Effect of Same-session EUS on ERCP in Pancreaticobiliary Diseases

This is a single-center randomized controlled trial. Eligible subjects meeting inclusion/exclusion criteria will be randomized 1:1 to EUS+ERCP group or ERCP group. Clinical data and patient-reported outcomes are regularly collected at baseline and during follow-up periods. A comparative analysis was conducted to assess the impact of same-session EUS on ERCP strategy modification between two groups, utilizing a structured questionnaire.Secondarily, the safety and efficacy of same-session EUS will be comprehensively evaluated by comparing complication rates, technical success rate and hospitalization costs, length of stay, and radiation exposure between groups.