Double duct sign

Last revised by Mostafa Elfeky on 27 Jan 2023

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 visualize the region, including: MRI, CT, ultrasound and endoscopic retrograde cholangiopancreatography (ERCP). In general, the double duct sign represents a malignant cause until disproved.

Pathology

Etiology

Common

Less common

Rare

Case reports 1-3

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