Laryngeal duplication cyst.

Benign congenital laryngeal cysts are rare. Infants and children with these lesions can present with chronic or intermittent airway obstructive symptoms, hoarseness, aspiration, chronic cough, or failure to thrive. The most common congenital laryngeal cysts include saccular cysts, laryngoceles, and ductal cysts. Other more unusual laryngeal lesions, such as hamartomas, choristomas, and teratomas, can also present with these symptoms. We describe a unique congenital cyst that arose in continuity with the larynx in a child with hoarseness and intermittent stridor. The features of this lesion are similar to those of bronchogenic duplication cysts of the trachea, but with histopathological features of the larynx.