An endoscopic sinus exam allows the doctor to see all the structures inside the nose and the sinuses.
Before inserting the endoscope, the passages inside the nose are opened up with a decongestant medicine and numbed with an anesthetic. The endoscope is guided up through a nostril and into the sinus opening, but it is not able to be inserted into the sinus itself.
This document has been updated in accordance with the CDC Recommendations for the Amount of Time Persons with Influenza-Like Illness Should be Away from Others. This document provides interim guidance and will be updated as needed.
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The nasal passages are blocked or have an abnormal size or shape.
Discolored, thick mucus is draining from a sinus opening.
Growths (nasal polyps) or foreign bodies inside the nose are seen.
The partition between the nasal cavities is crooked (deviated nasal septum) and is causing obstruction.
What To Think About
An endoscopic sinus exam is the best method of examining the nasal passages and sinus openings because it can detect small growths in the nose (polyps) and other problems that may be missed by routine examination.