All patients without pancreatic or biliary disorders undergoing upper-GI endoscopic ultrasound (EUS) are eligible for the study.~The maximal diameter of the pancreatic duct will be measured by endoscopic ultrasound in millimeters at four different parts:~Pancreatic head~Pancreatic neck~Pancreatic body~Pancreatic tail
The maximal diameter of the pancreatic duct will be measured by endoscopic ultrasound at four different parts:~Pancreatic head~Pancreatic neck~Pancreatic body~Pancreatic tail