Prenatal ultrasonography findings of fetus with congenital high airway obstruction (chaos): A case report and review of literature

Congenital high airway obstruction syndrome (CHAOS) is an extremely rare life-threatening condition. The sonographic findings are very characteristic. Generally the diagnosis is made with the 4-chamber view of the fetal heart. Typically, both lungs appear severely enlarged and highly echogenic. The heart points towards the midline of the thorax. Fetal ascites is determined commonly on ultrasound examination. A case of CHAOS, diagnosed antenatally via ultrasound is reported here. Correspondence to: Emre Ekmekci, M.D., Sanliurfa Education and Research Hospital, Department of Obstetrics and Gynecology, Perinatology Unit, Sanliurfa, Turkey, Tel: +90 505 687 56 35; E-mail: dr.ekmekci@hotmail.com