[Congenital cystic dilatation of the common bile duct].

The congenital cystic dilatation of choledochal is a congenital malformation with little frequency in Mexico. It is of multifactorial etiology and it is known with different names. The work present its frequency, pathology, etiology, its clinic manifestations, the actual methods of cabinet and laboratory there are most frequently to be used in the preoperative diagnosis of the disease. It is proposed an algorithm for to study the icteric syndrome in infants and childhood who has suspicion of congenital cystic dilatation of choledochal. It is describe the surgical treatment and the mortality.