Although laryngomalacia is the leading cause of stridor in infancy, vocal cord paralysis, despite its low incidence, is still the second most common cause.

摘是一岁以下的婴幼儿呼吸窘迫常见的主诉，而喉头软化症是最常见的原因。

Laryngomalacia is the most common etiology of non-infectious molluscum in infancy.Endoscopic morphology revealed abnormal droop of sub-glottis structures in inhale.

喉软化是婴儿期最常见的非的病因,内镜检查显示,吸气时声门上有异常的下垂。