Volume 6, Issue 2 (3-2021)                   J Res Dent Maxillofac Sci 2021, 6(2): 22-28 | Back to browse issues page

XML Print


1- Oral and Maxillofacial Radiology Dept, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran.
2- Oral and Maxillofacial Radiologist, Mashhad, Iran.
3- Radiology Dept, Faculty of Medicine, Mashhad Branch Islamic Azad University, Mashhad, Iran.
4- Oral and Maxillofacial Radiology Dept, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran. , bagherpoura@mums.ac.ir
Abstract:   (2035 Views)
Background and Aim: The paranasal sinuses are known for their complex anatomy and significant difference in size and shape. This study aimed to determine the prevalence of anatomical variations of the paranasal sinuses in computed tomography (CT).
Materials and Methods: In this cross-sectional study, patients over 18 years of age, who had undergone CT imaging in a private clinic, were screened for eligibility of participation. After excluding the patients with evident sinus pathology in CT, 501 cases were included. An experienced maxillofacial radiologist evaluated the CT images and extracted the frequency of variations using a standardized data collection sheet. Kolmogorov-Smirnov test, independent samples t-test, and chi-square test were used for the statistical analysis.
Results: Among the studied variations, septal deviation and Agger nasi, each with 336 cases (67.1%), and concha bullosa, with 240 cases (47.9%), were identified as the most common anatomical variations of the paranasal sinuses. The uncinate bulla showed a significant correlation with gender (P=0.036).
Conclusion: Considering the remarkable prevalence of some important variations, which may increase the risk of complications in sinus surgery, CT evaluation of patients is recommended before surgical interventions in the sinuses.
Full-Text [PDF 700 kb]   (906 Downloads) |   |   Full-Text (HTML)  (850 Views)  
Type of Study: Original article | Subject: Radiology

References
1. Bhatti MT, Stankiewicz JA. Ophthalmic complications of endoscopic sinus surgery. Surv Ophthalmol. 2003 Jul-Aug;48(4):389-402. [DOI:10.1016/S0039-6257(03)00055-9]
2. Siedek V, Pilzweger E, Betz C, Berghaus A, Leunig A. Complications in endonasal sinus surgery: a 5-year retrospective study of 2,596 patients. Eur Arch Otorhinolaryngol. 2013 Jan;270(1):141-8. [DOI:10.1007/s00405-012-1973-z] [PMID]
3. Taghiloo H, Halimi Z. The frequencies of different types of nasal septum deviation and their effect on increasing the thickness of maxillary sinus mucosa. J Dent Res Dent Clin Dent Prospects. 2019 Summer;13(3):208-14. [DOI:10.15171/joddd.2019.032] [PMID] [PMCID]
4. Badia L, Lund VJ, Wei W, Ho WK. Ethnic variation in sinonasal anatomy on CT-scanning. Rhinology. 2005 Sep;43(3):210-4.
5. Vaid S, Vaid N. Normal Anatomy and Anatomic Variants of the Paranasal Sinuses on Computed Tomography. Neuroimaging Clin N Am. 2015 Nov;25(4):527-48. [DOI:10.1016/j.nic.2015.07.002] [PMID]
6. Hindi K, Alazzawi S, Raman R, Prepageran N, Rahmat K. Pneumatization of Mastoid Air Cells, Temporal Bone, Ethmoid and Sphenoid Sinuses. Any Correlation? Indian J Otolaryngol Head Neck Surg. 2014 Dec;66(4):429-36. [DOI:10.1007/s12070-014-0745-z] [PMID] [PMCID]
7. Emirzeoglu M, Sahin B, Bilgic S, Celebi M, Uzun A. Volumetric evaluation of the paranasal sinuses in normal subjects using computer tomography images: a stereological study. Auris Nasus Larynx. 2007 Jun;34(2):191-5. [DOI:10.1016/j.anl.2006.09.003] [PMID]
8. Lund VJ, Savy L, Lloyd G. Imaging for endoscopic sinus surgery in adults. J Laryngol Otol. 2000 May;114(5):395-7. [DOI:10.1258/0022215001905670] [PMID]
9. Jones NS. CT of the paranasal sinuses: a review of the correlation with clinical, surgical and histopathological findings. Clin Otolaryngol Allied Sci. 2002 Feb;27(1):11-7. [DOI:10.1046/j.0307-7772.2001.00525.x] [PMID]
10. Marino MJ, Riley CA, Wu EL, Weinstein JE, Emerson N, McCoul ED. Variability of Paranasal Sinus Pneumatization in the Absence of Sinus Disease. Ochsner J. 2020 Summer;20(2):170-5. [DOI:10.31486/toj.19.0053] [PMID] [PMCID]
11. Tajudeen BA, Kennedy DW. Thirty years of endoscopic sinus surgery: What have we learned? World J Otorhinolaryngol Head Neck Surg. 2017 Jan 21;3(2):115-21. [DOI:10.1016/j.wjorl.2016.12.001] [PMID] [PMCID]
12. Bayram M, Sirikci A, Bayazit YA. Important anatomic variations of the sinonasal anatomy in light of endoscopic surgery: a pictorial review. Eur Radiol. 2001;11(10):1991-7. [DOI:10.1007/s003300100858] [PMID]
13. Fadda GL, Rosso S, Aversa S, Petrelli A, Ondolo C, Succo G. Multiparametric statistical correlations between paranasal sinus anatomic variations and chronic rhinosinusitis. Acta Otorhinolaryngol Ital. 2012 Aug;32(4):244-51.
14. Eloy JA, Svider PF, Setzen M. Clinical pearls in endoscopic sinus surgery: key steps in preventing and dealing with complications. Am J Otolaryngol. 2014 May-Jun;35(3):324-8. [DOI:10.1016/j.amjoto.2014.01.013] [PMID]
15. Mokhasanavisu VJP, Singh R, Balakrishnan R, Kadavigere R. Ethnic Variation of Sinonasal Anatomy on CT Scan and Volumetric Analysis. Indian J Otolaryngol Head Neck Surg. 2019 Nov;71(Suppl 3):2157-64. [DOI:10.1007/s12070-019-01600-6] [PMID] [PMCID]
16. Mamatha H, Shamasundar NM, Bharathi MB, Prasanna LC. Variations of ostiomeatal complex and its applied anatomy: a CT scan study. Indian J Sci Technol. 2010;3(8):904-7. [DOI:10.17485/ijst/2010/v3i8.17]
17. Salhab M, Matai V, Salam MA. The impact of functional endoscopic sinus surgery on health status. Rhinology. 2004 Jun;42(2):98-102.
18. Adeel M, Rajput MS, Akhter S, Ikram M, Arain A, Khattak YJ. Anatomical variations of nose and para-nasal sinuses; CT scan review. J Pak Med Assoc. 2013 Mar;63(3):317-9.
19. Talaiepour AR, Sazgar AA, Bagheri A. Anatomic variations of the paranasal sinuses on CT scan images. Front Dent. 2005;2(4):142-6.
20. Kayalioglu G, Oyar O, Govsa F. Nasal cavity and paranasal sinus bony variations: a computed tomographic study. Rhinology. 2000 Sep;38(3):108-13.
21. Sarna A, Hayman LA, Laine FJ, Taber KH. Coronal imaging of the osteomeatal unit: anatomy of 24 variants. J Comput Assist Tomogr. 2002 Jan-Feb;26(1):153-7. [DOI:10.1097/00004728-200201000-00027] [PMID]
22. Pérez-Piñas, Sabaté J, Carmona A, Catalina-Herrera CJ, Jiménez-Castellanos J. Anatomical variations in the human paranasal sinus region studied by CT. J Anat. 2000 Aug;197 ( Pt 2)(Pt 2):221-7. [DOI:10.1017/S0021878299006500] [PMID] [PMCID]
23. Parks ET. Cone beam computed tomography for the nasal cavity and paranasal sinuses. Dent Clin North Am. 2014 Jul;58(3):627-51. [DOI:10.1016/j.cden.2014.04.003] [PMID]
24. Devaraja K, Doreswamy SM, Pujary K, Ramaswamy B, Pillai S. Anatomical Variations of the Nose and Paranasal Sinuses: A Computed Tomographic Study. Indian J Otolaryngol Head Neck Surg. 2019 Nov;71(Suppl 3):2231-40. [DOI:10.1007/s12070-019-01716-9] [PMID] [PMCID]
25. Badawi K, Madani GA, Seddeg Y. The radiological study of Ethmoidal infraorbital (Haller's) cells among adult Sudanese Subjects. J Dent Med Sci. 2017 May;16(5):138-41.
26. Cellina M, Gibelli D, Floridi C, Toluian T, Valenti Pittino C, Martinenghi C, Oliva G. Sphenoid sinuses: pneumatisation and anatomical variants-what the radiologist needs to know and report to avoid intraoperative complications. Surg Radiol Anat. 2020 Sep;42(9):1013-24. [DOI:10.1007/s00276-020-02490-y] [PMID]
27. KEROS P. [On the practical value of differences in the level of the lamina cribrosa of the ethmoid]. Z Laryngol Rhinol Otol. 1962 Nov;41:809-13.
28. Babu AC, Nair MRPB, Kuriakose AM. Olfactory fossa depth: CT analysis of 1200 patients. Indian J Radiol Imaging. 2018 Oct-Dec;28(4):395-400. [DOI:10.4103/ijri.IJRI_119_18] [PMID] [PMCID]
29. Madani GA, El-Mardi AS, El-Din WA. Analysis of the anatomic variations of the ethmoid roof among Saudi population: A radiological study. Eur J Anat. 2020;24(2):121-8.

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.