La dilatazione cistica congenita delle vie biliari.

Congenital cystic dilatations of the biliary tract consist in a segmental dilatation in every tract of the biliary tree. The authors have observed a patient who first underwent surgical treatment for choledochal cyst located between the cystic duct and duodenum. Thirteen years after this patient developed a second retropancreatic cyst. The aetiological hypothesis was reviewed along with classification and complications. The Authors stress the importance of an aggressive surgical approach whenever a biliary cyst is diagnosed. Owing to the high incidence of cancer in patients operated in childhood by internal drainage, they suggest the radical procedure with the re-establishment of the biliodigestive continuity through Roux Y intestinal loop.