[Choledochal cyst]

Cysts of the choledochus are the most frequent type of cystic dilatation of the biliary pathways. The authors describe the case of a 24-year-old patient with a history of biliary complaints. A cyst of the choledochus was suspected after sonographic examination. The diagnosis was confirmed by infusion cholangiography and endoscopic retrograde cholangiography. The patient was indicated for surgery, i.e. resection of the cyst with hepaticojejunoanastomosis Roux-en-Y.