Rhinosinusitis can be further subclassified into polypoid and non polypoid rhinosinusitis. The treatment of each of these conditions consists of nasal sprays and medications. Surgery is reserved for patients who have symptoms refractory to medical treatment. The goal of any surgical procedure in rhinosinusitis is to enhance the efficacy of the delivery of the nasal sprays to the lining of the nose. The surgical treatment of rhinosinusitis is called functional endoscopic sinus surgery [FESS].