[Biliary cancer developing on a congenital cystic dilatation of the common bile duct. Apropos of a case]. / Le cancer biliaire développé sur une dilatation kystique congénitale de la voie biliaire principale. A propos d'une observation.

The authors report a new case of biliary cancer occurring in a 23 year old asiatic girl with congenital cystic dilatation of the common bile duct. After a review of the world literature, the authors recall the principal features of this congenital disease, which is becoming more common in France with the influx of Asian refugees. They stress the risk of malignant degeneration which is related to irritation of the mucosa and biliary stasis. Ideal treatment involves complete excision of the cyst.