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International Journal of Infertility & Fetal Medicine


A 27-year-old primigravida at 19 weeks of gestation with suspected hydrops fetalis. There were characteristic ultrasonographic features like hyper inflated and enlarged lungs, flattened diaphragm, small centrally displaced heart, and hydrops suggestive of CHAOS. Congenital high airway obstruction syndrome is a rare fetal anomaly causing nonimmune hydrops. Prenatal ultrasound features are characteristic. Meticulous system wise fetal imaging in the presence of hydrops would help in early diagnosis of the condition, helping in appropriate management of pregnancy.

Keywords: Fetal ascitis, Flattened diaphragm, Hyper inflated enlarged lungs, Small centrally displaced heart, Subglottic laryngeal atresia.

How to cite this article: Mundkur A, Nayak SS, Vasudeva A, Katta GM, Kumar P. Congenital High Airway Obstruction Syndrome presenting as Nonimmune Hydrops in a 19-week Fetus. Int J Infertil Fetal Med 2016;7(3):99-102.

Source of support: The authors thank the Indian Council of Medical Research for financial support (BMS No. 54/5/2010).

Conflict of interest: None

Date of received: 14 March 2016

Date of acceptance: 29 June 2016

Date of publication: September 2016

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