[Neonatal chylothorax and conservative treatment]

Four cases of chylothorax are reported. Three cases were congenital and the fourth was secondary to surgical repair of esophageal atresia. Of the three cases of congenital chylothorax, two were diagnosed prenatally. In all three patients with congenital chylothorax, the clinical course was favorable and pleural effusion was resolved in 19-80 days. Treatment consisted of pleural taps when respiratory function was compromised, parenteral nutrition, and respiratory support as required. Enteral nutrition was started with a formula containing medium-chain triglycerides while some effusion remained. Weight gain during this period was slow. Follow-up oscillated between 12 months and 6 years with no recurrences. The case of postsurgical chylothorax appeared several days after the intervention. Pleural effusion increased to 705 ml/day and the patient received no enteral nutrition. The patient died from intestinal complications and multiorgan failure 8 days after the onset of chylothorax. The etiology and clinical features of this condition, as well as the short- and long-term outcome with conservative treatment, are reviewed.