 The purpose of this research study is to determine whether or not computed tomography CT scans performed on patients with symptoms of chronic rhinosinusitis CRS but without any physical signs of the disease will 1 prove to be less expensive in the treatment and evaluation as compared to current practices, 2 avoid the use of unnecessary antibiotic prescriptions, and 3 provide a more efficient way to diagnose conditions in patients who have had CRS ruled out as a cause. 