Technique
Telescopes with diameters of 4mm (adult use) and 2.7mm (pediatric use) and with a variety of viewing angles (0 degrees to 30, 45, 70, 90, and 120 degrees) provide good illumination of the inside of the nasal cavity and sinuses. High definition cameras, monitors and a host of tiny articulating instruments aid in identifying and restoring the proper drainage and ventilation relationships between the nose and sinus cavities. Cultures (putting abnormal sinus secretions into an incubator to check for bacteria and fungi) and biopsies (examining small bits of tissue under a microscope) can be easily obtained to yield valuable diagnostic information to guide postoperative therapy for optimal long term results.
All the sinuses can be accessed at least to some degree by means of this surgery: The frontal sinuses located in the forehead, the maxillary sinuses in the cheeks, the ethmoid sinuses between the eyes, and the sphenoid sinuses located in the back of the nasal cavity at the base of the skull.
Read more about this topic: Functional Endoscopic Sinus Surgery
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