Classification and volumetric study of the sphenoid sinus on MDCT images
We aimed to determine the position and size of the sphenoid sinus (SS) in our study and compare the results of the measurements relative to age, gender, and the presence of pituitary adenoma using multidetector computerized tomography (MDCT).
We retrospectively evaluated the paranasal sinus computerized tomography (CT) images of 200 individuals (age range of all the individuals 4–84 years; 101 females, 99 males; age range of individuals with pituitary adenoma 15–63 years; 15 females, 9 males) with 24 pituitary adenomas. The shape of SS were identified and classified, volume were measured by MDCT also for individuals with pituitary adenoma.
It was determined that the volume averages were significantly affected by the type of SS. Among all the individuals studied, the sellar type of SS was most frequently observed (41.5%), followed by the postsellar type (38.5%), and the least observed was the presellar type (9%). The volume of the SS is bigger in males than females although the volume is not affected by the presence of pituitary adenomas. The development of the SS continues until the age of nine.
The morphology and morphometry of the SS show individual differences. These anatomic variations are important for decision making and application for surgical interventions (especially transsphenoidal surgery).
KeywordsSphenoid sinus Morphology Morphometry Variation Multidetector computed tomography
The authors would like to thank Assistant Professor Neriman Akdam for her work on the statistical analysis.
This research did not receive any specific Grant from funding agencies in the public, commercial, or not-for-profit sectors.
Compliance with ethical standards
Conflict of interest
None of the authors have a personal conflict of interest to declare.
All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Ethical approval (approval number 2016/205) was given by the Non-Intervention Clinical Research Ethics Committee of the Medical Faculty.
A formal informed consent procedure was waived due to the retrospective nature of this study.
- 2.Reittner P, Doerfler O, Goritschnig T et al (2001) Magnetic resonance imaging patterns of the development of the sphenoid sinus: a review of 800 patients. Rhinology 39(3):121–124Google Scholar
- 7.Yonetsu K, Watanabe M, Nakamura T (2000) Age-related expansion and reduction in aeration of the sphenoid sinus: volume assessment by helical CT scanning. AJNR Am J Neuroradiol 21(1):179–182Google Scholar
- 10.Lake MG, Krook LS, Cruz SV (2013) Pituitary adenomas: an overview. Am Fam Phys 88(5):319–327Google Scholar
- 11.Kayalioglu G, Erturk M, Varol T (2005) Variations in sphenoid sinus anatomy with special emphasis on pneumatization and endoscopic anatomic distances. Neurosciences 10(1):79–84Google Scholar
- 13.Banna M, Olutola PS (1983) Patterns of pneumatization and septation of the sphenoidal sinus. J Can Assoc Radiol 34(4):291–293Google Scholar
- 15.Sheikh BY, Zahran MF (2006) Radiological anatomy of the sella turcica and sphenoid sinus. Pan Arab J Neurosurg 10(1):46–49Google Scholar
- 23.Rhoton AL Jr, Hardy DG, Chambers SM (1979) Microsurgical anatomy and dissection of the sphenoid bone, cavernous sinus and sellar region. Surg Neurol 12(1):63–104Google Scholar