<p>Congenital high airway obstruction syndrome (CHAOS) causes secondary morphological changes which can be detected on ultrasound. Here we report a case of congenital high airway obstruction with an occipital encephalocele detected at 23 weeks of gestation.</p>
L. Devi Padmanabhan and Dr. Sheela Nampoothiri, “Prenatal detection of congenital high airway obstruction syndrome with encephalocele.”, Indian J Radiol Imaging, vol. 26, no. 1, pp. 70-2, 2016.