Chylous ascites in the neonate: A narrative review

Chylous ascites (CA), also called chyloperitoneum, is a rare form of ascites in the neonate. It results from the leakage of lymph into the peritoneal cavity. There are congenital and acquired forms of CA. CA may occur during fetal life, and the prognosis will depend on its volume, gestational age at the onset, and the association with other anomalies. Lymphangiectasia is the most common congenital cause, and acquired forms are mainly traumatic and/or post-operative. This review aims to gather the most current information on CA and addresses important aspects regarding etiology, pathophysiology, clinic, diagnostic tools, and treatment.