Management of congenital laryngeal malformations.

Overview

Congenital malformations of the larynx are relatively rare but may be life-threatening. The most common causes include laryngomalacia, vocal cord paralysis, and subglottic stenosis. The last 20 years has seen major advances in the field of surgical correction of such anomalies also serving to reduce the number of tracheotomies in children and the inherent dangers they pose. Success rates for the most popular surgical procedures have been favorable. These include supraglottoplasty for cases of severe laryngomalacia, in which relief of respiratory symptoms has been shown to occur in excess of 80% of cases. Complication rate is low, although postoperative death has been reported. Failure usually occurs in patients with concomitant airway abnormalities including pharyngomalacia. Vocal cord lateralization for vocal cord paralysis with airway compromise is achieved by means of arytenoidopexy or arytenoidectomy, using the lateral approach. Arytenoidectomy also can be performed using laryngofissure or endoscopic laser excision. Subglottic stenosis is the 3rd most common congenital anomaly. Anterior or multiple cricoid splitting with cartilage graft interpositioning is usually performed. The success rates for these procedures has been shown to be approximately 90%.