Chylothorax is the accumulation of chyle or lymph fluid in the pleural cavity. Congenital chylothorax is a rare cause of respiratory distress in the newborn and is the most common form of pleural effusion in the neonatal period. We report 4 clinical cases of chylothorax of the neonatal age and discuss various congenital malformed conditions that can be associated with chylothorax
