Radiographic evaluation of a subglottic cyst in an infant

Abstract

The complete evaluation of stridor in infants requires a careful history and physical examination, and appropriate radiographic studies. Examination of the upper airway is appropriate in symptomatic patients. Premature infants are especially at risk for subglottic mucosal injury if intubation is required. Compromise of the subglottic space by various lesions may result in biphasic stridor due to a fixed obstruction, and other symptoms may include recurrent croup, cyanosis, apnea, feeding difficulty, and failure to thrive. Although not diagnostic, soft tissue radiographs of the neck may aid in suggesting a diagnosis before endoscopy.