Nasal polyps
Definition
Nasal polyps are small, sac-like growths made up of inflamed tissue lining the nose (nasal mucosa).
Causes
Nasal polyps start near the ethmoid sinuses (located at the top of the inside of the nose) and grow into the open areas. Large polyps may block the airway.
Having any of the following conditions may make people more likely to get nasal polyps:
- Asthma
- Chronic sinus infections
- Cystic fibrosis
- Hay fever (allergic rhinitis)
About one in four people with cystic fibrosis have nasal polyps.
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