Los quistes de colédoco son malformaciones congénitas infrecuentes de las vías biliares. Se presenta el caso de un quiste neonatal abdominal con diagnostico intraoperatorio y posterior manejo con respuesta satisfactoria. Choledochal cysts are common congenital malformations of the bile ducts. A case is presented of a neonatal patient with an abdominal cyst diagnosed during surgery. Its subsequent management and satisfactory response, is also discussed.