[Neonatal aortic thrombosis].

A case of aortic thrombosis is reported in a 14 days old newborn after extensive review of the world literature is made. It was secondary to sepsis and hypercoagulability syndrome. Emphasis is placed on the early diagnosis, on the usefulness of the Doppler system when studying the vascular system as a non-invasive method in critically ill pediatric patients; likewise, on the determinant surgical procedure during the initial stages of the establishment of the aortic thrombosis.