Assessment of a postoperative anastomotic stricture following correction surgery of a type IVa choledochal cyst using Gd-EOB-DTPA-enhanced magnetic resonance cholangiography.

Choledochal cyst is a relatively uncommon disease which is characterized by congenital dilatation of the intra and/or extrahepatic part of the biliary tree. Type IVa choledochal cysts are managed surgically through total excision of the entire extrahepatic part of the abnormal bile ducts and a simultaneous hepaticoenterostomy. Postoperative anastomotic stricture after excision of choledochal cysts and hepaticojejunostomy is a well-known late complication. We report a case of a 17-year-old female in whom gadoxetic acid-enhanced magnetic resonance cholangiography assisted in the evaluation of a biliary stricture following bile duct procedures after choledochal cyst correction surgery.