E-ISSN 1305-3612
Abdominal Radiology - Original Article
Frequency of bile duct confluence variations in subjects with pancreas divisum: analysis of magnetic resonance cholangiopancreatography findings
1 Department of Radiology, Ankara University School of Medicine, Ankara, Turkey  
Diagn Interv Radiol ; : -


Purpose: The aim of this study was to evaluate the frequency of bile duct branching pattern variations at the hepatic confluence in patients with pancreas divisum (PD).


Methods: A search was performed through the Picture Archiving Communication System (PACS) using the keyword of “pancreas divisum” to identify patients. The magnetic resonance cholangiopancreatography (MRCP) images of 137 patients who were diagnosed with PD between August 2011 and November 2016 were retrospectively analyzed for the presence of bile duct variations. A control group of 137 patients without PD was established who were investigated during the same period. Variations of the biliary tract were grouped into seven types according to the McSweeney et al. classification.


Results: Biliary tract variations were detected in 103 of a total of 274 patients. Fifty-eight (42.3%) of the PD patients and 45 (32.8%) of the controls had biliary duct variation at the hepatic confluence level. The patients with PD were more likely to have biliary tract variation, compared to the control group; however, it was not statistically significant (p=0.105). The most common variation in the patients with PD was type 3a variation (16.8%).



Conclusion: MRCPs showed atypical bile duct confluence pattern in nearly half of the patients with PD and controls. There was no statistically significant difference in the frequency of anatomic variations at bile duct confluence in patients with PD versus those without PD. Deriving from different outpouchings in early embryological life may explain this non- significant difference.

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