This report discusses 15 non-cleft palate children who developed velopharyngeal incompetence (VPI) after adenotonsillectomy. Eight boys and 7 girls with a mean age of 6.2 years (range 4.3-11 years) were treated between 1970 and 1993. After 2 years conservative management to allow for spontaneous resolution, only (7 children) 47% achieved normal resonance. Speech therapy was employed mainly for those patients with unrelated articulation errors. Fifty-three percent (8 children) required surgery for persistent hypernasality and in 6 a pharyngoplasty was performed and in one child a posterior pharyngeal cartilage graft was inserted. One case is still to have surgical intervention. Half of the non-cleft children who develop VPI after adenotonsillectomy will respond to conservative management.