The study was carried out on 39 patients (18 male, 21 female, mean ages: 36.3 years old). Total of uncinate processes samples were 49. Of 39 patients, 29 patients were removed uncinate processes in one side and 10 patients were removed uncinate processes in two sides. The mean time of sinusitis was over 3 months in 32 cases (82%), 1 to 3 months in 3 cases (7.7%), and under 1 month in 4 cases (10.3%). 10 samples from uncinate processes in two side had the same histopathological lesions