Adenotonsillar hypertrophy is the most common cause but not the only cause for OSAS in children. This study looked at the role of DISE in 3 different categories of pediatric OSAS, “conventional”, “disproportional” and “persistent” OSAS. All subjects had preoperative confirmatory polysomnograms. The authors observed that, in otherwise healthy children, DISE changed the surgical plan more frequently in children with “disproportional” and “persistent” OSAS. Additional procedures included functional endoscopic sinus surgery (FESS) for polyp removal and pharyngoplasty for lateral pharyngeal wall collapse correction.