Congenital stenosis of the larynx is a comparatively rare condition. Not more than twelve cases have been recorded in the literature within the past decade. Textbooks on laryngology give little more than mention to the subject. Within all probability numerous cases occur but are not diagnosed, owing to death at birth or shortly after by asphyxia.
True congenital stenosis is limited to atresia, bands or webs occurring within the glottis, involving the vocal cords, ventricular bands or arytenoids, and is permanent unless relieved by some surgical method. This condition should not be confused with the commonly seen congenital laryngeal stridor that results from an abnormal flaccidity of the epiglottis, which is usually elongated, or abnormal flaccidity or thickening of the aryteno-epiglottic folds. The majority of such cases need little treatment, and the condition is outgrown.
Jackson1 states that the most frequent lesion of congenital stenosis of the larynx is
Wilkinson RW. CONGENITAL STENOSIS OF THE LARYNX. JAMA. 1934;102(21):1756–1757. doi:10.1001/jama.1934.62750210001009a