Nasal polyps are fleshy swellings that develop in the lining of the nose and paranasal sinuses, which are the air-filled spaces linked to the nasal cavity. They are noncancerous growths.

Chronic rhinosinusitis (CRS) including nasal polyps is a chronic inflammatory disease involving the mucosa of the nose and one or more paranasal sinuses. Despite differing hypotheses, the cause ...

What is Nasal Polyp Surgery? Nasal polyp surgery removes polyps from the paranasal sinuses ... delivery of allergy medications into the sinus cavity, helping control allergies and prevent future ...

CRS is defined as inflammation of the nose and paranasal sinuses ... chronic rhinosinusitis and polyps in the setting of previous functional endoscopic sinus surgery.