what are nasal polyps
Nasal polyps are soft, sac-like growths on the lining of the nose or sinuses. Nasal polyps can grow anywhere on the lining of the nose or the sinuses. They often grow where the sinuses open into the nasal cavity. Small polyps may not cause any problems. Large polyps can block your sinuses or nasal airway. Nasal polyps are not cancer.
Nasal polyposis is an inflammatory condition of unknown etiology. Nasal polyps are the most common tumors of the nasal cavity. Approximately 30% of patients with nasal polyps test positive for environmental allergies. The prevalence of nasal polyps is increased in children with cystic fibrosis and persons with known aspirin hypersensitivity. Nasal polyposis can impair a person's quality of life more than perennial allergic rhinitis.