[Ring-sling complex association with pig bronchus: a pediatric case report].

The ring-sling complex is an association between pulmonary artery sling and congenital tracheal stenosis. Pulmonary artery sling is a rare form of vascular ring in congenital heart disease. The clinical case of a child with inspiratory laryngeal stridor associated with respiratory distress is presented, evaluated in another center where respiratory endoscopy was performed, observing extrinsic tracheal compression.

[Aspiration syndrome due to laryngeal cleft in an infant].

Aspiration is the passage of food content and endogenous secretions into the airway. Anatomical, neuromuscular or functional anomalies are among the major causes. The laryngeal cleft is a rare congenital anomaly that should be considered in the differential diagnosis of aspiration syndrome in neonates and infants.

[Treatment of acquired laryngeal stenosis in pediatrics: case series].

Subglottic stenosis is one of the most common causes of upper airway obstruction in children. Even though it may have a congenital origin, most of them are acquired stenosis. This condition should be suspected in any child with a history of intubation, instrumentation or trauma of the airway that is having difficulty breathing.