Study subjects
allergy
ALLERGY, ACUTE PANCREATITIS, PANCREATITIS
Patients with naïve papilla who were candidates for diagnostic or therapeutic biliary ERCP were invited to participate in this study. All patients underwent endoscopic ultrasonography (EUS), abdominal computed tomography, or magnetic resonance image (or magnetic resonance cholangiopancreatography) before ERCP. Exclusion criteria were as follows: age less than 18 years, presenting acute pancreatitis before ERCP, endoscopic papillectomy, EUS-guided intervention accessing bile duct, inaccessible papilla due to altered anatomy, previous history of pancreatitis, and allergy to contrast.