Estenosis congénita de la apertura piriforme nasal

Obstruction of the nasal airway is potentially lethal in newborns because they are forced to breathe through their noses. The most common cause of obstruction is atresia of the choanae; however, other entities such as congenital nasal pyriform aperture stenosis, although rare, must be considered in the differential diagnosis of a newborn that shows signs and symptoms of upper airway compromise. We report two cases of nasal pyriform aperture stenosis seen at our center; we describe the main characteristics of the condition and review the relevant literature.