Endoscopic sinus surgery is a minimally invasive surgical method in which a small camera and surgical instruments are inserted into the nasal and sinus cavities. In this method, the sinus cavities are accessed through the nostrils or through the mouth and the surgical procedure is performed. This technique offers advantages such as less trauma, less blood loss and faster recovery. Endoscopic sinus surgery is generally used in the treatment of problems such as sinusitis, nasal polyps, nasal septum curvature. This surgical method can be an effective option to improve patients' quality of life and relieve symptoms.