Abstract
Chronic rhinosinusitis (CRS) is now recognized to affect approximately 10% of the adult population in industrialized countries. Allergens, viruses and bacteria, air pollutants and similar chemicals, which are recognized as the main causes of the development of chronic rhinosinusitis (CRS), cause irritation of the epithelial layer, which in turn causes local inflammation of the sinus mucosa. As a result, the swelling of the mucous membrane leads to the narrowing or blocking of the natural openings of the nose and the retention of mucus. Modern functional endoscopic sinus surgery (FESS) is an effective and safe method of treating diseases of the paranasal sinuses in children, and its success is important in the correct determination of indications, patient preparation, adequate management of anesthesia, and correct assessment of the postoperative period.
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