Abstract
Sphenoid sinus anatomical variations are very common, its prior knowledge is very essential while doing skull base surgery to avoid catastrophic complications which might be due to damage of surrounding neurovascular structures. This retrospective observational study was done to examine the different anatomical variations of sphenoid sinus on CT PNS which was conducted in KMCH, Katihar from May 2019 to April 2020 involving 60 cases above 15 years of age who had undergone CT PNS. Sellar type of pneumatization was seen in 66.7%, pterygoid process pneumatization was seen in 25%. Single septation was present in 43.3%, septum attached to optic nerve was seen in 33.3%, onodi cell was seen in 36.7%, anterior clinoid process pneumatization was seen in 13.3% of cases. By this study we came to a conclusion that preoperative assessment of sphenoid sinus anatomy and its variations is mandatory to avoid surrounding neurovascular structure damage and CSF leak.
Similar content being viewed by others
Availability of data and materials
Data obtained from the available patient treatment record in record section of our Institute and images taken from the memory of the machine of the Institute.
References
Vidić B (1968) The postnatal development of the sphenoidal sinus and its spread into the dorsum sellae and posterior clinoid processes. Am J Roentgenol Radium Ther Nucl Med 104(1):177–183
Fujii K, Chambers SM, Rhoton AL Jr (1979) Neurovascular relationships of the sphenoid sinus: a microsurgical study. J Neurosurg 50:31–39
Hardy J (1971) Transsphenoidal hypophysectomy. J Neurosurg 34:582–594
DeLano MC, Fun FY, Zinreich SJ (1996) Relationship of the optic nerve to the posterior paranasal sinuses: a CT anatomic study. AJNR Am J Neuroradiol 17(4):669–675
Cho JH, Kim JK, Lee JG, Yoon JH (2010) Sphenoid sinus pneumatization and its relation to bulging of surrounding neurovascular structures. Ann Otol Rhinol Laryngol 119(9):646–650
Hammer G, Radberg C (1961) The sphenoidal sinus: an anatomical and roentgenologic study with reference to transsphenoid hypophysectomy. Acta Radiol 56:401–422
Sethi DS, Leong JL (2006) Endoscopic pituitary surgery. Otolaryngol Clin N Am 39:563–583
Hamid O, El Fiky L, Hassan O, Kotb A, El Fiky S (2008) Anatomic variations of the sphenoid sinus and their impact on trans-sphenoid pituitary surgery. Skull Base 18(1):9–15
Tomovic S, Esmaeili A, Chan NJ, Shukla PA, Choudhry OJ, Liu JK, Eloy JA (2013) High-resolution computed tomography analysis of variations of the sphenoid sinus. J Neurol Surg B Skull Base 74(2):82–902
Cohnen M (2010) Radiological diagnosis of the paranasal sinuses. Radiologe 50(3):277–94 (quiz 95–96)
Unlu A, Meco C, Ugur HC, Comert A, Ozdemir M, Elhan A (2008) Endoscopic anatomy of sphenoid sinus for pituitary surgery. Clin Anat 21(7):627–632
Sandulescu M, Rusu MC, Ciobanu IC, Ilie A, Jianu AM (2011) More actors, different play: sphenoethmoid cell intimately related to the maxillary nerve canal and cavernous sinus apex. Rom J Morphol Embryol 52(3):931–935
Cavallo LM, Messina A, Cappabianca P et al (2005) Endoscopic endonasal surgery of the midline skull base: anatomical study and clinical considerations. Neurosurg Focus 19:E2
Romano A, Z uccarello M, Van Loveren HR, Keller JT, (2001) Expanding the boundaries of the transsphenoidal approach: a micro anatomic study. Clin Anat 14:1–9
Sethi DS, StenleyRE PPK (1995) Endoscopic anatomy of sphenoid sinus and sella turcica. J Laryngol Otol 109:951–955
Sethi DS, Pilley PK (1995) Endoscopic management of lesion of sella turcica. J Laryngol Otol 109(10):956–962
Baldea V, Sandu OE (2012) CT study of sphenoid sinus Pneumatization types. Rom J Rhinol 2(5):17–30
Alam-Eldeen MH et al (2018) CT evaluation of pterygoid process pneumatization and the anatomic variations of related neural structures. Egypt J Radiol Nucl Med 49:658–662
Famurewa OC et al (2018) Sphenoid sinus pneumatization, septation, and internal carotid artery. A CT study Niger Med J 59(1):7–13
Thimmaiah VT et al (2017) Pneumatization patterns of onodi cell on multidetector computed tomography. J Oral Maxillofac Radiol 5(3):63–66
Mikami T et al (2007) Anatomical variation in pneumatisation of anterior clinoid process. J Neurosurg 106:170–174
Funding
None.
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Ethical approval
Approval for study taken from institutional ethics committee.
Consent to participate/publication
As it is record based observational study and patient identity is not revealed hence consent is not required.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Akbar Ali, M., Manish Jaiswal, D., Sameer Ahamed, D.B. et al. A Study of Anatomical Variations of Sphenoid Sinus on CT PNS: Our Experience. Indian J Otolaryngol Head Neck Surg 74 (Suppl 2), 1690–1693 (2022). https://doi.org/10.1007/s12070-021-02842-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12070-021-02842-z