Double duct sign

Radiologic sign characterized by simultaneous dilatation of both the main pancreatic duct and the contiguous intrapancreatic common bile duct, typically indicating a periampullary or pancreatic head obstructive process.

Causes

• Malignancy

  • Pancreatic cancer

  • Ampullary cancer

  • Cholangiocarcinoma

  • Lymphoma

  • Metastasis

• Inflammatory causes

  • Choledocholithiasis

  • Chronic pancreatitis

• Sphincter of Oddi dysfunction

• Ampullary stenosis