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    The role of Onodi cells in sphenoiditis: results of multiplanar reconstruction of computed tomography scanning
    (ASSOC BRASILEIRA OTORRINOLARINGOLOGIA & CIRURGIA CERVICOFACIAL, 2017) Şentürk, Mehmet; Güler, İbrahim; Azgın, İsa; Sakarya, Engin Umut; Övet, Gültekin; Alataş, Necat; Tolu, İsmet
    Introduction: Onodi cells are the most posterior ethmoid air cells and extend superolateral to the sphenoid sinus. These cells are also intimately related with the sphenoid sinus, optic nerve, and carotid artery. Radiologic evaluation is mandatory to assess for anatomic variations before any treatment modalities related to the sphenoid sinus. Objective: To evaluate the effect of Onodi cells on the frequency of sphenoiditis. Methods: A retrospective analysis was performed in 618 adult patients who underwent high resolution computed tomography between January 2013 and January 2015. The prevalence of Onodi cells and sphenoiditis was evaluated. Whether the presence of Onodi cells leads to an increase in the prevalence of sphenoiditis was investigated. Results: Onodi cell positivity was observed in 326 of 618 patients and its prevalence was found to be 52.7%. In the study group, 60.3% (n =73) were ipsilaterally (n =21) or bilaterally (n = 52) Onodi-positive, whereas 39.7% (n=48) were Onodi-negative (n=35) or only contralaterally Onodi-positive (n= 13). Of the control group, 48.3% (n=240) were Onodi-positive and 51.7% (n=257) were Onodi negative. The co-existence of Onodi cells ipsilaterally was observed to increase the identification of sphenoiditis 1.5-fold, and this finding was statistically significant (p < 0.05). Conclusion: The prevalence of sphenoiditis appears to be higher in patients with Onodi cells. However, it is not possible to state that Onodi cells are the single factor that causes this disease. Further studies are needed to investigate contributing factors related to sphenoiditis. (C) 2016 Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervico-Facial. Published by Elsevier Editora Ltda.
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    Sphenoethmoid Cell: The Battle for Places Inside of the Nose Between a Posterior Ethmoid Cell and Sphenoid Sinus: 3D-Volumetric Quantification
    (BENTHAM SCIENCE PUBL LTD, 2017) Şentürk, Mehmet; Güler, İbrahim; Azgın, İsa; Sakarya, Engin Umut; Öcal, Ramazan; Ağırgöl, Betül; Alataş, Necat
    Background: Sphenoethmoid cells may be above the sphenoid sinus with/or without contact to optical nerve. Although sphenoethmoid cells are theoretically considered to possibly influence the sphenoid sinus volume, we could not find any study in the literature on this issue. Aims: The aim of our study was to detect sphenoethmoid cells and measure the sphenoid sinus volume using multiplanar computerized tomography and also investigate the correlation between the presence of sphenoethmoid cells and the sphenoid sinus volume. Methods: Retrospectively 141 patients who had available paranasal computerized tomography images were included in this study. The sphenoid sinus volumes of each patient were calculated individually for each side, and the relationship between the presence of sphenoethmoid cell and sphenoid sinus volume was investigated. Results: Sphenoethmoid cells were detected at 106 (37.5%) of the total 282 sides in 141 patients. No gender difference was observed. The total sphenoid sinus volume was significantly lower in the group of patients who had bilateral sphenoethmoid cells than in the sphenoethmoid cell negative group. In patients with a unilateral sphenoethmoid cell, a significant decrease in the sphenoid sinus volume was observed only for the side where the sphenoethmoid cell was located. Conclusion: It was observed that the sphenoethmoid cells caused a significant reduction in the sphenoid sinus volume on the side where they were located. In the case of low sphenoid sinus aeration, the sphenoethmoid cell should be kept in mind. Further studies with an extended patient series are required to explore this issue.
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    Volumetric analysis of the maxillary sinus in pediatric patients with nasal septal deviation
    (DEOMED PUBL, ISTANBUL, 2015) Şentürk, Mehmet; Azgın, İsa; Öcal, Ramazan; Sakarya, Engin Umut; Güler, İbrahim; Övet, Gültekin; Alataş, Necat
    Objective: Reasons such as nasal deviation, which reduces airflow in nose and impairs oxygenation, may affect the maxillary volume. In this study, we aimed to perform a retrospective study between the degree of nasal septal deviations and maxillary sinus volume. Methods: The files of 103 male and 124 female patients (total n=227) who applied to otorhinolaryngology clinic with nasal septal deviation without coexisting sinonasal morbidity were investigated, and compared with those without nasal septal deviation and coexisting sinonasal morbidity. Three-dimensional paranasal sinus CTs were performed for the diagnosis (CTs were found to be normal, and etiology of chronic intracranial headache could not be determined) and they were evaluated retrospectively. Maxillary sinus volume was calculated for each case in the groups. The relationship between nasal septal deviation and maxillary sinus volume was evaluated. Results: Our study determined that there was statically no significant difference between the maxillary volumes of the group with (29.34 +/- 7.46 cm(3)) or without nasal septal deviation (27.89 +/- 8.51 cm(3)) (p>0.05). No matter what the right nasal septal deviation angle is, it did not affect the right, left and total maxillary sinus volumes. Both left-and right-sided nasal septal deviations did not have any effect on the right, left and total maxillary volumes. Conclusion: Any difference was not observed between the maxillary sinus volumes of the children in the pediatric age group with and without nasal septal deviations, and it was concluded that the existence or severity of the septal deviation did not have any effect on the maxillary sinus volume.