Vai trò của cắt lớp vi tính độ phân giải cao trong phân tích tế bào onodi đối với đánh giá trước phẫu thuật nội soi xoang ở bệnh nhân viêm xoang mạn tính

To evaluate the role of high resolution computed tomography (HRCT) for the analysis of Onodi cell in the evaluation of pre-endoscopic sinus surgery of chronic sinusitis. Matherial and Method: The cross sectional descriptive study on the chronic sinusitis patients who underwent the sinus HRCT and the endoscopic sinus surgery. Then, the patients with Onodi cell was noted and rated. The Onodi cell was analyzed and evaluated by its contact with the optic nerve and the internal carotid arteries on HRCT to prevent the complication pre-endoscopic sinus surgery. Results: From 09/2020 to 9/2022, 200 chronic sinusitis patients who underwent the sinus HRCT and endoscopic sinus surgery at Hanoi Medical University Hospital. Among them, 197 patients with Onodi cell was observed, take into account for 98.5%. Patients with bilateral Onodi cell was 195, take into account for 97.5%. The contact of Onodi cell with optic nerve was observed on 108 patients, take into account for 54% and with internal carotid artery on 11 patients, occupied 5.5%. Conclusion: Sinus HRCT had an important role for the analysis of the Onodi cell in order to establish the pre- endoscopic sinus surgery bilan.