Vallecular cyst: report of four cases--one with co-existing laryngomalacia.

Congenital vallecular cysts are rare. In this report, four infants having vallecular cysts encountered over a six-year period from 1992 to 1997 were reviewed. All of them presented with upper aerodigestive tract symptoms. Marsupialization was performed in three of them and CO2 laser excision was performed in the fourth patient. There was no recurrence of the cyst in any patient. One of them also had co-existing laryngomalacia. The degree of airway collapse caused by laryngomalacia improved after cyst removal. The laryngomalacia resolved spontaneously. Cyst fluid culture was performed in one of the patients and yielded Staphylococcus aureus but there was no other definite indicator of infection. Staphylococcus aureus could also be isolated in the respiratory tract from two of the other patients.