what grows nasal polyps
Back to Top Causes. Nasal polyps can grow anywhere on 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.They seem to grow due to long-term swelling and irritation in the nose from allergies, asthma, or infection.mall polyps may not cause any problems. Large polyps can block your sinuses or nasal airway. Nasal polyps are not cancer. They seem to grow due to long-term swelling and irritation in the nose from allergies, asthma, or infection.