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Successful treatment of fetal bilateral primary chylothorax--report of the two cases.

Primary fetal chylothorax is an uncommon complication, associated with high perinatal morbidity and mortality. In our report, we describe two cases of fetal bilateral primary chylothorax successfully treated with pleuro-amniotic shunting. In both cases, ultrasound scans showed bilateral, hypoechoic fluid in the pleural space without any associated structural malformations and features of infection and aneuploidy Laboratory analysis of pleural fluids revealed 79% and 92% of lymphocytes, respectively confirming chylothorax in both fetuses. In the first case, pleuro-amniotic shunts were successfully inserted at 31 weeks and 6 days of gestation. Ultrasound scan after two weeks showed expansion of the left lung and lack of fluid in both pleural cavities. At 39 weeks of gestation, a 2660 g baby boy was delivered by cesarean section (Apgar score: 9). The child did not require surgical intervention and was discharged home on day 16 of life. In the second case, the insertion of shunts (at 24 weeks and 6 days of gestation) also significantly reduced the amount of the fluid in the pleural cavities, but one shunt had to be surgically removed after birth. At 30 weeks and 2 days of gestation, a cesarean section was performed due to maternal cholestasis. A female weighing 1400 g was delivered (Apgar score: 7). The chest X-ray revealed only a small amount of fluid in the left pleural cavity The infant was discharged on postnatal day 26, in good condition and with body weight of 2150 g. Pleuro-amniotic shunt insertion is a method of choice in the treatment of confirmed primary fetal chylothorax.