Pneumatization and extensions of the sphenoid sinus: a CT overlook

Budu, Vlad Andrei; Crăc, Silviu; Goanță, Cristina; Farcasanu, Patricia Delia; Decuseară, Tatiana; Lupoi, Daniel

doi:10.2478/rjr-2021-0005

Cited by 3 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Степень пневматизации клиновидной пазухи варьирует у разных индивидуумов [10], включая отсутствие воздухоносных полостей в теле кости или их гипоплазию. Хотя такие индивидуальные варианты пневматизации у взрослых людей встречаются относительно редко [11].…”

Section: ;22;4(125)unclassified

Radiological anatomy of hypoplastic sphenoid sinuses

Kabak,

Mel’nichenko,

Savrasova

et al. 2023

View full text Add to dashboard Cite

The degree of pneumatization of the sphenoid sinus varies in different individuals, including the absence of air cavities in the body of the bone or their hypoplasia. Such options are quite rare, they should be considered when planning and choosing a method of surgical treatment. Objective. To classify sphenoid sinuses of unusual size and shape. Patients and methods. The data of cone-beam computed tomography of 16 patients aged 22 to 70 years with dental and ENT pathology, who had an unusual size and shape of the sphenoid sinuses, were studied in order to classify them. On axial scans, the maximum transverse size (width, diameter) of the sinus was measured. On parasagittal scans, the position of the posterior wall of each sphenoid sinus relative to the sella turcica was assessed, and the distance to the plane drawn through the anterior wall of the sella turcica was also measured. Results. There were 13 cases of unilateral and 3 cases of bilateral hypoplasia of the sphenoid sinus. Bilateral hypoplasia is a rare variant of individual variability. With unilateral hypoplasia, the contralateral air cavity may not extend beyond the body of the sphenoid bone or extend into other parts of it or adjacent structures. Conclusion. When diagnosing unilateral hypoplasia of the sphenoid sinus, one should not only consider its distance from the anterior wall of the Turkish saddle but also correlate the absolute dimensions of the two air cavities.

show abstract

Section: ;22;4(125)unclassified

Radiological anatomy of hypoplastic sphenoid sinuses

Kabak,

Mel’nichenko,

Savrasova

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The crucial insertions are the carotid canal and the optic canal (Figure 5). The preoperative CT scan visualized in axial section is the optimal method to identify the septum insertion 7,17 .…”

Section: Intrasinusal Septamentioning

confidence: 99%

“…Sellar pneumatization is the most common type in which the pneumatization surpasses the tuberculum sella and can extend as far as the clivus and can be divided in incomplete (Figure 6 -A) and complete sellar pneumatization (Figure 6 -B) in relation with the posterior wall of the sella turcica. Excessive pneumatization of the sphenoid sinus determines thinning of the sphenoid bone and exposure of critical anatomical landmarks (internal carotid artery, optical nerve) making preoperative assessment of the sphenoid sinus anatomy mandatory 3,17 .…”

Section: Imagistic Evaluation Of Sphenoid Sinus Landmarksmentioning

confidence: 99%

Challenges of endoscopic approach in sphenoid sinus surgery for beginners

Tarabichi

Badea

Pascu

et al. 2022

Romanian Journal of Rhinology

View full text Add to dashboard Cite

The sphenoid sinus and related anatomy should be known considering the intimate relationships with vital surrounding structures, such as the internal carotid artery, the optic canal, the maxillary and the vidian nerves. The sphenoid sinus has numerous variations regarding the pneumatization, the septation and the relation with the neurovascular structures. Multiplanar sinus CT scan is mandatory in the preoperative evaluation of the patient to avoid injury during endoscopic sphenoidotomy. In this article, we review and describe the importance of the anatomical landmarks of the sphenoid sinus on the CT scan, the anatomic findings that augment the risk of complications during sphenoid sinus endoscopic surgery. Moreover, we discuss about the appropriate type of endoscopic approach of the sphenoid sinus depending on the localization of the pathologic process and the experience of the surgeon, as well as the endoscopic surgery challenges. We analysed 100 patients who addressed to our clinic in the last 6 months and who underwent CT of the paranasal sinuses and we studied the pneumatization type and the anatomic variations of the optic nerve and the internal carotid artery. A variety of sphenoid sinus anatomy variations were found, and we emphasize the value of imagining evaluation before performing functional endoscopic sinus surgery.

show abstract

Anatomical Features and Morphometric Characteristics of the Sphenoidal Sinus in MRI Studies

Bechev,

Yotova,

Kostadinov

et al. 2024

Cureus

View full text Add to dashboard Cite

Differential access to pathological sellar processes and adjacent regions is determined by the anatomic structures identified through diagnostic imaging. Both direct endonasal access (microscopic or endoscopic) and sublabial access utilize the sphenoid sinus (SS) as the primary surgical pathway. Critical factors include the pneumatization of the sinus, its intermediate septa, and the presence of a double wall, consisting of a connective tissue membrane along the dorsal wall of the SS. The present study aims to demonstrate the significance of the size and type of the SS based on MRI measurements. The type of SS, its pneumatization, and the proximity of adjacent brain structures are crucial for different surgical approaches to the SS and pituitary fossa. In neurosurgical practice, six main types of sinuses are recognized: sphenoid body type, lateral type, clival type, lesser wing type, anterior type, and combined type. Failure to consider these variations can lead to damage to the cavernous sinus, Meckel's cave, nerve structures in the middle cranial fossa, planum sphenoidale, suprasellar region, and vital brainstem structures located on the clivus. Randomly included MRI measurements were conducted on 112 patients from Pulmed University Hospital, Plovdiv, Bulgaria, categorized into two cohorts based on gender, with mean ages of 51 years for men and 47.8 years for women. The measurements, recorded in centimeters, were obtained using two imaging software programs, RadiAnt DICOM Viewer (Medixant, Poznan, Poland) and Weasis DICOM Viewer (Nicolas Roduit, https://github.com/nroduit/Weasis ). No statistically significant differences were observed between the measurements produced by the two programs. Measurements of the SS were taken in two equal groups, using three different projections: axial, sagittal, and coronal. The results for height, width, and depth showed average sizes of 2.73-3.04 cm in axial projections, 1.70-2.64 cm in sagittal projections, and 2.86-3.03 cm in coronal projections. The minor differences between axial and coronal measurements of the same parameters (height and width) are statistically acceptable and attributed to the varying angles of the MRI scans. These measurements are crucial for planning surgical access to the sellar and parasellar regions, determining the necessary bony resection of the posterior wall of the SS, and preventing complications from excessive bony trepanation.

show abstract

Pneumatization and extensions of the sphenoid sinus: a CT overlook

Cited by 3 publications

References 10 publications

Radiological anatomy of hypoplastic sphenoid sinuses

Radiological anatomy of hypoplastic sphenoid sinuses

Challenges of endoscopic approach in sphenoid sinus surgery for beginners

Anatomical Features and Morphometric Characteristics of the Sphenoidal Sinus in MRI Studies

Contact Info

Product

Resources

About