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    Confirmation of anatomical proximities in endoscopic sinus surgery with computer tomography: A cadaveric study
    (Bayrakol Medical Publisher, 2023) Erdem, Rukiye Ozcelik; Dundar, Mehmet Akif; Aricigil, Mitat; Arbag, Hamdi
    Aim: The aim of this study was to investigate the confirmation of anatomical proximities between endoscopic sinus surgery with computer tomography. Material and Methods: This study was done on 5 fresh frozen cadaver heads between May 2017 to June 2018. High-resolution computed tomography (HRCT) was taken before the operations. Firstly uncinectomy was done. Then all stages of functional endoscopic sinus surgery (FESS), which contains anteriorposterior ethmoidectomy, dissection of the sphenoid sinus and frontal recess, and maxillary sinusotomy were performed from anterior to posterior. Distances between each other landmarks and distances to the nasal vestibule were measured during the surgery. All measurements taken during dissection were measured on the coronal, axial, and sagittal section HRCT. Dissection data were compared with radiological data. Results: As a result of comparing the radiological data and dissection data, there was no significant difference between the data obtained from the sagittal section and the dissection data. A significant difference (P=0.03) was found between the dissection and radiological evaluation in the coronal section except for the measurements of SO-UT (p=0.853) and MP-SA (p=0.972), and in the axial section except for the measurements of the SO-C (p=0.579) and MP-SA (p=1). Discussion: Measurements obtained in the paranasal sinus CT can be used during FESS. While the data obtained in the sagittal section are suitable for the operation plan and can be used directly, the coronal and axial section are not.