Endoscopic surgery of paranasal sinuses

It is done to treat long-term (chronic) sinus infections or open the sinus passages and allow adequate drainage to the nose. It is called endoscopic procedure because the doctor uses an endoscope (small rigid tube with a light and a camera lens at the end) to observe the inside of the nose; generally, in order for the endoscope to advance, small incisions or cuts are made inside the nose. The doctor can create new ducts or open existing ones by removing polyps, cysts or thickened mucous membranes.