The dimensions of the sphenoid sinuses: evaluation before the functional endoscopic sinus surgery

Jaworek-Troć, Joanna; Zarzecki, Michał; Zamojska, I; Iwanaga, Joe; Przybycień, Wojciech; Mazur, Marcel; Chrzan, Robert

doi:10.5603/fm.a2020.0059

Cited by 15 publications

(18 citation statements)

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“…Such anterior supranasal recesses of the sphenoidal sinus are commonly observed in computed tomography scans but are overlooked [30]. A number of other studies have provided important details regarding the numerous anatomic possibilities of the sphenoidal sinuses [8,[31][32][33][34][35][36][37][38][39]. However, there is still a substantial amount of research that needs to be conducted on this aspect [31].…”

Section: Ethmoidal and Sphenoidal Pneumatizationsmentioning

confidence: 99%

Patterns of Pneumatization of the Posterior Nasal Roof

et al. 2022

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(1) Background: For good surgical performance, sound knowledge of anatomy is required. Although the ethmoid air cells and sphenoid sinuses are subject to a high degree of variation, their possible extensions above the nasal fossa at the posterior end of the cribriform plate of the ethmoid bone (CPEB) were seemingly overlooked. (2) Methods: We retrospectively studied 162 case files from 55 male and 107 female cases, with ages varying from 42 to 80, which were scanned using Cone Beam Computed Tomography. (3) Results: In 56.17% of cases, an unpneumatized CPEB (type I) was found. Nasal roof recesses of ethmoidal origin (type II) were found at the posterior end of the CPEB in 20.37% of cases. Different types of sphenoidal pneumatizations of the posterior end of the CPEB (type III) were found in 22.83% of the cases. Onodi cells projected nasal roof recesses (type IV) in only 10 cases. In all types, nasal roof recesses were found either above the CPEB or within/underneath it. Moreover, such nasal roof recesses were found to be either unilateral, extended contralaterally, or bilateral. (4) Conclusions: As such recesses of the posterior CPEB, previously overlooked, belong to the posterior rhinobase, they should be carefully documented preoperatively to avoid unwanted surgical damage to the olfactory bulb or CSF fistula.

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Section: Ethmoidal and Sphenoidal Pneumatizationsmentioning

confidence: 99%

Patterns of Pneumatization of the Posterior Nasal Roof

et al. 2022

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“…Notwithstanding, the sphenoid sinuses are to date assessed from every possible angle due to their vastly complicated and varied anatomy. Some of the most recognizable variants include their dimensions, extensive pneumatisation and hence presence of recesses, as well as relation to the neighboring neurovascular entities, namely the internal carotid canal [10][11][12][13][14][15][16]22].…”

Section: Introductionmentioning

confidence: 99%

A computed tomography comprehensive evaluation of the ostium of the sphenoid sinus and its clinical significance

et al. 2022

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Background: The purpose of this research was to evaluate the size of the sphenoid sinuses' ostia, the distance between them and the distance between the medial margin of the ostia and the median line in the Polish adult population. Materials and methods:The analysis was undertaken as a retrospective study of 296 computed tomography (CT) scans of patients (147 females, 149 males) with no comorbidities in their sphenoid sinuses. The paranasal sinuses were investigated by using Spiral CT Scanner (Siemens Somatom Sensation 16), in the option Siemens CARE Dose 4D, without administering any contrast medium. Having obtained transverse planes, multiplans reconstruction tool was used in order to glean sagittal and frontal planes. Results:The average size of both sphenoid sinuses ostia was 0.31 cm for both genders (for females ranging from 0.1 to 0.5 cm and from 0.1 to 0.6 cm for males). The mean distance between both sphenoid sinuses ostia was 0.6 cm for both genders (the range for females was 0.1-1.4 cm, whereas 0.1-1.8 cm for males). The average distance between the medial margin of the ostium and the median line was 0.32 cm for both genders (0.31 cm for females in the range of 0-0.9 cm and 0.32 cm for males in the range of 0-1 cm).Conclusions: Intraoperative identification of the sphenoid sinus ostia might prove difficult and their inadequate excision could lead to potential iatrogenic complications, hence detailed anatomical descriptions are still warranted in specific populations in order to perform safe and effective procedures.

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“…Usually denoted as right and left, separated by the main septum, they are known to have a vastly varied morphology. Some of the most notable discrepancies between them include: their dimensions, relation to the surrounding neurovascular entities, the number of septa present, and the degree to which they are aerated (pneumatised) [20][21][22][23]. Henceforth, it is extremely difficult to assign one variation as a "normal anatomical variant" of the sphenoid sinuses due to the scarcity of unequivocal patterns found [21].…”

Section: Introductionmentioning

confidence: 99%