ĐÁNH GIÁ ĐẶC ĐIỂM HÌNH ẢNH VÀ MỐI TƯƠNG QUAN GIỮA TẾ BÀO ĐÊ MŨI VỚI VIÊM XOANG TRÁN TRÊN CẮT LỚP VI TÍNH ĐA DÃY Ở BỆNH NHÂN VIÊM MŨI XOANG MẠN TÍNH

Abstract

Purpose: Determine the proportion and average size of Agger Nasi cells (ANCs) on Multislice Computed Tomography (MSCT) in patients with chronic rhinosinusitis and the correlation of Agger Nasi cells and frontal sinusitis. Subjects and methods: a retrospective study in 222 patients having chronic rhinosinusitis and undergoing sinus MSCT without intravenous contrast injection at Radiology Center-Hanoi Medical University Hospital from September 2020 to September 2022. MSCT scanning procedure from the frontal sinus to the end of the sphenoid sinus with 0.625mm thin layers, reconstructed in the coronal plane perpendicular to the hard palate and axial parallel to the hard palate. We considered ANCs those air cells located within the frontal process of the maxillary bone, the average size is determined in the upper-lower and front-back. Results: The study included 222 patients with chronic rhinosinusitis. The average age of the patient group was 47.7±14.4, ranging from 8-77 years old with 109 patients (49.1%) male and 113 patients (50.9%) female. Among 222 patients,  ANCs was present in 191 (86%) and absent in 31 (14%) patients. Of which the right side is in 172 (90%), the left side is in 189 (99%) patients, the difference is not statistically significant. The average size of the right ANCs was 7.06±2.48mm and the left was 6.59±3.29mm, the difference was not statistically significant. There were no differences between age and sex of patients with and without ANCs and the size and ratio of right and left ANCs. There were 155 patients (69.8%) with frontal rhinosinusitis, and 133 patients (59.9%) with frontal sinusitis and ANCs and 9 patients (4.1%) without frontal sinusitis and without ANCs, the difference was not statistically significant. Conclusion: ANCs were a common anatomical variant. There was currently no relationship between the presence of ANCs and the rate of frontal sinusitis