Abstract
The objectives of this study were to determine sinus measurements specific for the Turkish population using CT sagittal thin-slice reconstruction images and to clarify the three-dimensional anatomical features of the sphenoid sinus, along with its surrounding structures, that are relevant to performing an endoscopic sphenoidotomy. Images of 300 patients (165 female, 135 male) were studied. The research was conducted on the axial plane with a 1 mm slice thickness and a 0.6 mm slice interval, and sagittal reconstruction was performed with a 0.4 mm slice interval. Measurements of the sinus were obtained, and the presence of Onodi cells was researched. Line 1 was found to be significantly shorter in the Turkish patients of this study compared to studies of other populations. Lines 4 and 6 were found to be longer on the left side (Line 4 right: 18.8±3.6 mm, left: 19.3±3.4 mm, p=0.027; Line 6 right: 24.1±6.8 mm, left: 24.3±6.8 mm, p=0.008). Lines 2, 3, 4 and 6 were longer in men than in women (p<0.05). In the Turkish population, Line 1 is shorter, so the risk of skull base perforation is greater. Lines 4 and 6 are longer on the left side; thus, choosing the left ostium in sinus dilation is safer. Because of sex differences regarding Lines 2, 3, 4 and 6, sex should be considered in sphenoid sinus procedures.
Highlights
Endoscopic sinus operations (ESOs) are widely performed today
Because of sex differences regarding Lines 2, 3, 4 and 6, sex should be considered in sphenoid sinus procedures
The sphenoid sinus represents a passage involved in the surgical treatment of many diseases of the anterior and middle parts of the skull base [4]
Summary
Because of its low morbidity and short operation duration and the possibility of an approach toward the wide part of the sinus with an angled telescope, the endonasal endoscopic approach was the most commonly used in past years to enter the sphenoid sinus [1, 2]. This approach has been used in treatment of diseases of the sphenoid sinus, such as chronic rhinosinusitis resistant to medical treatment, nasal polyps, mucoceles, cerebrospinal fistulas, fungal infections, foreign objects and tumors, and in many other diseases, such. The progress of multi detector computed toography (MDCT) and the possibility of obtaining multiplanar images have allowed for images of the sphenoid sinus to be obtained and for measurements to be obtained that meet the needs of surgeons
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