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

摘要喘鸣是一的婴幼儿呼吸窘迫的主诉，而喉头软化症是的原因。

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

喉软化是婴儿期的非传染性喘鸣的病因,内镜检查显示,吸气时声门上有异的垂。