Sphincter of Oddi Dysfunction (SOD) refers to a functional disorder where the sphincter fails to open or close properly, leading to a disruption in the flow of bile and pancreatic juices. This can cause a range of symptoms including abdominal pain, jaundice, and pancreatitis. SOD can be classified into two main types: biliary SOD, which affects the bile ducts, and pancreatic SOD, which affects the pancreatic ducts.
