Study of Sphenoid Sinus Anatomy in Relation to Endoscopic Surgery

Sareen, Devendra; Agarwal, AK; Kaul, J. M.; Sethi, Ashwani

doi:10.4067/s0717-95022005000300012

Cited by 65 publications

(66 citation statements)

References 8 publications

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“…In our study, we observed lower rate (2.2%) relative to those reported in the literature. Finally, Saren et al [15] detected higher incidence rates (up to 80%) for multiple septations, while Hamid et al [13] reported a much lower percentage (8.7%). In our study, multiple septations were detected in only 7.1% of the patients.…”

Section: Discussionmentioning

confidence: 99%

Radiological evaluation of septal bone variations in the sphenoid sinus

Dündar¹

2014

J Med Updates

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ÖzetAmaç: Sfenoid sinüste yer alan septum, optik sinir ve internal karotid arter ile ilgili olarak varyatif durumlar›n belirlenmesi.Yöntem: Akut/kronik sinüzit tan›s›yla paranasal sinüs bilgisayarl› tomografi istenen 218 hasta retrospektif olarak taranm›flt›r. Bu hastalar›n tomografileri aksiyel ve koronal kesitlerde incelenerek sfenoid sinüs, kemik septa varyasyonlar›, say› ve uzan›m flekli yönünden s›n›f-land›r›lm›fl, ayr›ca optik sinir ve internal karotid arter protrüzyon valanslar› hesaplanm›flt›r.Bulgular: Radyolojik inceleme sonucunda 5 tip septa varyasyonu saptanm›flt›r. Yüz otuz iki adet (%60,5) tek komplet septumlu, 66 adet (%30.2) tek inkomplet septumlu, 6 adet (%2.7) çift septumlu (komplet+inkomplet), 9 adet (%4.1) çift septumlu (komplet+komplet) ve 5 adet (%2.2) septumu olmayan sfenoid sinüs tan›mlanm›flt›r. Tek olan septumlar›n %64 oran›nda orta hatta oldu¤u, di¤er tiplerin ise orta hatt›n hemen sa¤ veya solundan bafllad›¤› izlenmifltir. Ayr›ca optik sinir ve internal karotid arter protruzyon oranlar› (n=39) 17.8% ve (n=61) %27.9 olarak bulunmufltur. Sonuç: Cerrahi öncesi bilgisayarl› tomografi ile yap›lan de¤erlendir-me ve cerrahi planlama, endoskopik giriflimler için çok büyük önem tafl›makta ve olas› majör cerrahi komplikasyonlar›n azalt›lmas›nda rol almaktad›r.Anahtar sözcükler: Endoskopik sinüs cerrahisi, sfenoid sinüs varyasyonlar›. AbstractObjective: To determine septal variations and rates of intrasinusal protrusions of optic nerve and internal carotid artery in sphenoid sinus. Methods:Retrospective analysis of spiral computed tomography scanning of paranasal sinuses of 218 patients diagnosed as acute/chronic sinusitis was performed. Bilateral sphenoid sinuses were evaluated as if a single sinus, septa of this sinus were evaluated in terms of number and configuration. Besides rates of optic nerve and internal carotid artery protrusions were determined.Results: A total of 5 types of septal variations were detected. A single complete septum (n=132; 60.5%), a single incomplete septum (n=66; 30.2%), double septum (complete + incomplete, n=6; 2.7%), two complete septa (n=9; 4.1%), and sphenoid sinuses without septum (n=5; 2.2%) were identified. Sixty-four percent of single septum was located in midline, while other types were found immediately right or left side of the midline. Besides, protrusions of optic nerve and internal carotid artery were detected in 39 (17.8%) and 61 (27.9%) cases, respectively. Conclusion:Preoperative evaluation with computed tomography and surgical planning dependent on these findings are very important for endoscopic interventions and these approaches minimize potential major intraoperative complications.

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Section: Discussionmentioning

confidence: 99%

Radiological evaluation of septal bone variations in the sphenoid sinus

Dündar¹

2014

J Med Updates

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“…Our study indicates that septa were mostly in paramedian position and more towards left side, but the study by Idowu et al [12] shows the septum is towards right side in most cases. Sareen et al [13] cited the existence of multiple septa in 80% of cases, Idowu et al [12] in 48.3% and a higher percentage (95%) of multiple septa are registries in the study of Jaworeka et al [14] and 81.8% by Abdullah et al, [9] while Hamid et al [8] and Riza Dindar et al [15] cited the existence of 8.7% and 7.1% multiple septations respectively, whereas in our study we have found 21.25% of cases having double septa in the sphenoid sinus and triple septa of sphenoid is seen in 5% cases.…”

Section: Discussionmentioning

confidence: 99%

Anatomical Variations of Sphenoidal Inter-Sinus Septa in Terms of Number and Attachments - A Ct Finding

Kashyap¹,

Purohit²,

Selvaraj³

et al. 2017

jemds

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BACKGROUNDSphenoid sinus is an important structure located in the body of the sphenoid bone. It is separated from critical surrounding structures like optic nerve and chiasm, cavernous sinus, pituitary gland and internal carotid artery by a thin bony lamella. Because of its location and close relation to these important anatomical structures, diagnosis and treatment of sphenoid sinus pathologies are very challenging. In the era of endoscopic approach to the sphenoid sinus and skull base, the detailed knowledge of anatomy of sphenoid sinus and its closely related structures is mandatory.The objective of this study is, in this study we concentrated on the variations in the anatomy of sphenoid septa in terms of number and attachment to the nearby structures with the help of computed tomography.

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“…The transnasal approach, however, affords outstanding visualisation and a safe, straightforward approach to the sphenoid sinus. 1 Based on the extent of its pneumatisation, the sphenoid sinus has been classified into the conchal, presellar and sella/post sella types. In the conchal type, the area below the sella is a solid block of bone without an air cavity.…”

Section: Discussionmentioning

confidence: 99%

“…1 Anthropometry, which is the systematic collection and correlation of measurements of the human body originated as a discipline in the 19 th century when early studies of human biological and cultural evolution stimulated an interest in the systematic description of population both living and extinct. 2 Cephalometry on the other hand is the scientific measurement of the dimensions of the head, usually through the use of standardized lateral skull radiographs or cephalograms.…”

mentioning

confidence: 99%

Subnasio-Sella Distance for Transnasal Approach to the Sella Region: Indirect vs. Direct Measurement on Sagittal Section of the Skull in Nigerians

et al. 2013

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Objectives:The incidence of pituitary pathology requiring surgery is on the increase. The transnasal approach to anterior skull base is a technique which demands a thorough knowledge of the surgical anatomy. There is a dearth of knowledge on reference values for transnasal surgery on subjects of African descent. Thus the aim of this study is to ultimately improve visualisation of the surgical corridor, minimize surgical risks and improved maneuverability of surgical instruments during transnasal microsurgery (ergonomics). Methods & Materials:A total of 11 cadavers of Nigerian descent were employed in this study. Using the 3 piece caliper set (Big Horn Corporation®,India), an indirect measurement of the Subnasio-sella distance was obtained. Subsequently, a direct measurement was obtained from sagittal sections of the same skulls.Result: All randomly selected cadavers employed in the study were adult males of Sub-saharan descent. The mean indirect (distance from the anterior nasal spine i.e. subnasal point to the sella floor in an intact skull), direct A (subnasio-sella distance in a sagitally transected skull) and sella thickness measurements were found to be 8.6cm ± 0.38 cm, 8.7 cm ± 0.37 cm and 0.2 cm±0.05 cm respectively ,at 95% confidence interval. Comparison of the indirect and the direct A measurements showed statistical significance (p<0.5). A semi-logarithmic equation was derived: Direct A= 8.297 ln(Indirect measurement) -9.079Conclusion: Since transnasal transsphenoidal approach has been successfully used in the treatment of various anterior skull base pathologies, applying a relationship equation would guide choice of instruments employed and immensely minimize associated operative risks.

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Study of Sphenoid Sinus Anatomy in Relation to Endoscopic Surgery

Abstract: Stankiewicz, J. A. The endoscopic approach to the sphenoid sinus. Laryngoscope, 99:218-22, 1989.

Cited by 65 publications

References 8 publications

Radiological evaluation of septal bone variations in the sphenoid sinus

Radiological evaluation of septal bone variations in the sphenoid sinus

Anatomical Variations of Sphenoidal Inter-Sinus Septa in Terms of Number and Attachments - A Ct Finding

Subnasio-Sella Distance for Transnasal Approach to the Sella Region: Indirect vs. Direct Measurement on Sagittal Section of the Skull in Nigerians

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