Nasal polyps are benign growths of swollen tissue in the sinuses. Unlike colon polyps these do not progress to become cancer. Symptoms of nasal polyps include nasal obstruction, sinus congestion, decreased sense of smell and taste, or recurrent sinus infections. Polyps are a sign of severe allergies and will often respond to treatment of allergies with nasal steroid sprays, antihistamines, oral steroids or allergy shots. For patients with polyps that do not respond to medical therapy surgery may be required to remove the polyps. Since polyps are a medical condition related to allergies it is common for many patients to have polyps recur multiple times. The Ann Arbor Sinus Center has incorporated the latest technology to prevent polyp regrowth and need for more surgery including the Propel Sinus stent (