Double duct sign

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[edit] Discussion of Double duct sign

  • The double duct sign is a finding seen at magnetic resonance (MR) cholangiopancreatography and consists of simultaneous dilatation of the common bile and pancreatic ducts.
  • This sign can also be seen with other modalities such as endoscopic retrograde cholangiopancreatography, computed tomography, and ultrasonography.
  • The simultaneous dilatation of the common bile duct (in the intrapancreatic segment) and the pancreatic duct occurs with biductal narrowing.
  • The narrowing is generally secondary to contiguous obstruction or encasement of the common bile and main pancreatic ducts by a pancreatic head tumor.
  • The two most common causes of the double duct sign are carcinoma of the head of the pancreas and carcinoma of the ampulla of Vater.

[edit] Imaging Findings for Double duct sign

[edit] Images

Patient #1

[edit] See Also

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[edit] References for Double duct sign