The treatment of rhinosinusitis in children is mostly medical. Surgery is indicated in few but important exceptions: orbital or intracranial complications of acute rhinosinusitis not responding to medical therapy, chronic rhinosinusitis (CRS) with persisting sinonasal infection and purulent discharge, cystic fibrosis, ciliary diskinesia, dacryocystitis due to sinusitis and resistant to medical treatment, fungal rhinosinusitis. According to recent data, 50 percent of ENT specialist perform an adenoidectomy to manage CRS before endoscopic sinus surgery (ESS). ESS techniques introduced in mid 90s, has significantly modified the treatment of complications of acute rhinosinusitis and of selected cases of chronic recurrent infections. ESS consists of minimally invasive surgical procedure as middle meatal antrostomy and anterior ethmoidectomy. Evidence suggests that adenoidectomy and ESS are the most frequent surgical procedure performed in RS management.