Pediatric rhinosinusitis represents a common endpoint of many potential etiologic factors, but fixed anatomic obstruction of sinus outflow is relatively unusual in pediatric patients. Surgical therapy is considered when medical therapy for underlying mucosal inflammation fails. Adenoidectomy is usually the first surgical intervention to be considered for young children, with the goal of improving sinus drainage and eliminating a potential source of bacteria. Endoscopic sinus surgery is considered for the small percentage of patients, most commonly those with underlying pulmonary disease, who fail less aggressive treatment measures. Every decision for surgery involves a risk-benefit analysis.