Double duct sign

The double duct sign refers to the presence of simultaneous dilatation of the common bile and pancreatic ducts. Being an anatomical sign it can be seen on all modalities that can visualise the region, including: MRI, CT, ultrasound and endoscopic retrograde cholangiopancreatography (ERCP). 

The two most common causes of the double duct sign are carcinoma of the head of the pancreas and ampullary tumours (e.g. carcinoma of the ampulla of Vater), although occasionally an impacted gall stone in the distal duct, with associated oedema, can also result in obstruction of the pancreatic duct. 

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Article information

rID: 12564
Section: Signs
Synonyms or Alternate Spellings:

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