What is the double duct sign of cholangiopancreatography?
- A stricture or complete obstruction of the intrapancreatic common bile duct and another stricture or complete obstruction of the main pancreatic duct nearby constitute the double duct sign.
- The most common malignant cause is adenocarcinoma of the pancreatic head; cholangiocarcinoma, lymphoma, and metastasis are occasional causes.
- The most common benign cause is chronic pancreatitis