[Neonatal choledocholithiasis: a case report].

Cholelithiasis as cause of jaundice in newborn is rare. Usually is associated with known predisposing factors as hemolysis, congenital anomalies of biliary tree, total parenteral nutrition, prolonged fasting. However there are recent signals in literature about idiopathic neonatal cholelithiasis, that seems to be more common than previously suspected. We describe a case of idiopathic neonatal choledochal lithiasis with spontaneous resolution in few days from jaundice beginning. The importance of ultrasonographic investigation for diagnosis and follow-up is confirmed. However, because it is often a self limiting phenomenon, an aggressive approach is not warranted in the asymptomatic infant.