FESS (Functional Endoscopic Sinus Surgery) is a modern, high-tech, and minimally invasive surgical method for treating various diseases of the paranasal sinuses. Paranasal sinuses are air-filled cavities in the skull bones that connect to the nasal cavity through small openings (ostia). Their main function is to warm, humidify, and clean inhaled air, as well as participate in voice formation. Inflammation, blockage of ostia, or other pathological processes in the sinuses disrupt their drainage and ventilation, leading to sinusitis (maxillary, frontal, ethmoid, sphenoid), polyp formation, cysts, and other problems.
The essence of FESS is that all manipulations are performed through intranasal access using an endoscope equipped with a video camera and microsurgical instruments. This allows the surgeon to see all structures in detail, remove pathological tissues, widen natural sinus ostia, and restore normal drainage without external facial incisions.
Find answers to common questions about this procedure
The surgery itself is performed under general anesthesia and is completely painless. In the postoperative period, moderate discomfort, stuffiness or pressure in the nose, and headache are possible. These symptoms are usually well controlled by prescribed pain medications.
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