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The Double Trouble: A Case of Duplicated Extrahepatic Bile Duct with Choledochal Cyst. Biliary tract shows a large number of anatomic variations and duplication of the bile duct is an extremely rare anomaly. It has been reported to be associated with other congenital conditions like Abnormal Pancreato Biliary Junction (APBJ), biliary atresia and choledochal cyst and may lead to complications like cholangitis, choledocholithiasis and malignancy. The clinical presentation may be with one of the above complications and the condition usually reveals itself only on imaging investigations, as a surprise to the radiologist and the surgeon. Its detection is important prior to any biliary tract surgery to prevent inadvertent bile duct injury. The authors report a case of a rare subtype of extrahepatic bile duct duplication with coexisting choledochal cyst.