Duplication of the common bile duct manifesting as recurrent pyogenic cholangitis: A case report

Figure 1 Computed tomography imaging and endoscopic retrograde cholangiopancreatography. A: Computed tomography revealed multiple stones in the common bile duct; B: Stones were removed by Endoscopic retrograde cholangiopancreatography using a Dormia basket; and C: Follow-up tubography using an endoscopic nasobiliary drainage showed no definite filling defects in the common bile duct.

Figure 2 Computed tomography imaging and endoscopic retrograde cholangiopancreatography. A: Follow-up computed tomography demonstrated choledocholithiasis in the extrahepatic bile duct draining the right lobe of the liver; B: An impacted stone was identified at the ampulla of Vater.

Figure 3 Magnetic resonance cholangiopancreatography. A: Magnetic resonance cholangiopancreatography showed duplicated common bile duct (CBD) independently draining the left and the right robes of the liver, to create a short segment intrapancreatic CBD without communicating channel. Residual stones were identified in the right CBD (white arrowhead); B: Both CBD was accessed using guidewire on Endoscopic retrograde cholangiopancreatography; and C: No definite filling defects were identified in both CBD on tubography using an endoscopic nasobiliary drainage.

Figure 4 Illustration of Choi’s double common bile duct classification.