laryngeal edema AE laryngomalacia AE 10060786 This is an AE which is the most common cause of chronic stridor in infancy, in which the soft, immature cartilage of the upper larynx collapses inward during inhalation, causing airway obstruction. QY, JX, HY http://en.volupedia.org/wiki/Laryngomalacia 喉软骨软化病