Congenital dilatation of the biliary tree is one of the most common inherited liver diseases, especially in Asian countries. Complications of congenital biliary dilatation is a very complex disease, to accurately detect and diagnose this pathology, it is necessary to combine clinical symptoms and paraclinical support to strengthen the diagnosis.

One of the major causes of cholestatic jaundice is choledochal cyst disease. This is a congenital cystic dilatation of the intra- or extrahepatic biliary system.

Jaundice is a phenomenon of red blood cells breaking down, the liver's bilirubin metabolism function is not complete. Pathological jaundice in newborns can cause complications of kernicterus, which can cause death or leave sequelae of slow development in children. Therefore, mothers should recognize some signs to distinguish physiological neonatal jaundice from pathological jaundice.