Sinus Polyps

Sinus polyps are grape-like growths of the sinus membranes that protrude into the sinuses or into the nasal passages. What causes polyps is not well understood, but some experts believe that allergies and infections can contribute to their growth. When polyps block nasal passages, they make it difficult for the sinuses to drain and for air to pass through the nose. When the sinuses are unable to drain, bacteria can build up and sinusitis can result.

Learn how sinus polyps are diagnosed ›