Abstract
Congenital high airway obstruction syndrome (CHAOS) is complete or partial obstruction of the fetal upper airway. CHAOS is a rare and fatal condition if no perinatal intervention is done. Antenatal sonographic imaging has typical findings that can help in an early diagnosis, which is important in deciding elective termination of the pregnancy or successful planning of appropriate perinatal management.
Highlights
Congenital high airway obstruction syndrome (CHAOS) is a rare life-threatening disorder caused by complete or nearcomplete obstruction of the fetal upper airway [1,2,3,4,5,6,7]
We report a case of congenital high airway obstruction syndrome due to laryngeal atresia diagnosed on routine antenatal ultrasound examination at 18 weeks of gestation
More than 100 case reports and some case series of CHAOS had been reported in the literature [13]
Summary
Congenital high airway obstruction syndrome (CHAOS) is a rare life-threatening disorder caused by complete or nearcomplete obstruction of the fetal upper airway [1,2,3,4,5,6,7]. It was first described by Hedrick in the late 1900s [1, 2, 4, 8]. We report a case of congenital high airway obstruction syndrome due to laryngeal atresia diagnosed on routine antenatal ultrasound examination at 18 weeks of gestation.
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