(ESS) surgery of the *paranasal sinuses using endoscopes. Functional endoscopic sinus surgery (FESS) clears inflamed tissue from routes of sinus drainage and aeration to allow the other sinuses to return to normal.... endoscopic sinus surgery
n. inflammation of one or more of the mucous-membrane-lined air spaces in the facial bones that communicate with the nose (the paranasal sinuses). It is often associated with inflammation of the nasal lining (*rhinitis) and may be acute or chronic (see rhinosinusitis). Symptoms may include pain, purulent discharge from the nose, nasal obstruction, and disturbances of the sense of smell. Many cases are self-limiting. Others require treatment with antibiotics, decongestants, or steroid nose drops. A few cases need surgery, such as sinus washouts, *antrostomy, or functional *endoscopic sinus surgery (FESS).... sinusitis
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