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Related Experiment Video

Updated: Feb 23, 2026

DUCT: Double Resin Casting followed by Micro-Computed Tomography for 3D Liver Analysis
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The crossing duct sign.

Yan-Lin Li1, Man-Leung Yu1, Kam-Ho Lee2

  • 1Department of Radiology, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong, Hong Kong SAR.

Abdominal Radiology (New York)
|September 6, 2017
PubMed
Summary
This summary is machine-generated.

Pancreas divisum, a common duct variation, can be identified by the crossing duct sign on MRCP. This sign shows the dorsal duct crossing the common bile duct to drain into the minor papilla.

Keywords:
Crossing duct signMRCPPancreas divisumPancreatic duct anomaly

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Area of Science:

  • Gastroenterology
  • Radiology
  • Anatomical Variations

Background:

  • Pancreas divisum is a frequent anomaly of pancreatic ductal anatomy, affecting up to 10% of individuals.
  • Its clinical significance varies widely among affected individuals.

Purpose of the Study:

  • To describe the "crossing duct sign" as a key indicator of pancreas divisum.
  • To highlight the utility of MRCP in visualizing this anatomical variation.

Main Methods:

  • Review of MRCP (Magnetic Resonance Cholangiopancreatography) images.
  • Identification and characterization of the "crossing duct sign" on maximum intensity projection (MIP) images.

Main Results:

  • The "crossing duct sign" is defined by the dominant dorsal pancreatic duct traversing the intrapancreatic common bile duct.
  • This anatomical configuration, indicative of pancreas divisum, is clearly visualized using MRCP MIP images.

Conclusions:

  • The "crossing duct sign" is a reliable sign for diagnosing pancreas divisum on MRCP.
  • MRCP is an effective imaging modality for identifying this common pancreatic duct anomaly.