The most common congenital biliary abnormalities seen in adults are choledochal cyst, anomalous junction of the pancreatic and common bile ducts, aberrant biliary ducts, choledochoceles, multiple communicating intra- and extrahepatic duct cysts, Caroli disease, pancreaticobiliary abnormalities associated with situs anomalies, annular pancreas, and aberrant pancreatic ducts associated with enteric duplication cysts.
I am not sure exactly which anomaly was yours.