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Study of Anatomical Variation, Prevalence, and Pattern of Optical Base Pneumatization Using CBCT
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GA Sabz1   , A Honarvar , H Ebrahimi2 , A Khoshnavataher3 , SR Panahi4 |
1- Department of Surgery, Yasuj University of Medical Sciences, Yasuj, Iran
2- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
3- Student Research Committee, Yasuj University of Medical Sciences, Yasuj, Iran
4- Department of Oral and Maxillofacial Radiology, Yasuj University of Medical Sciences, Yasuj, Iran , roghayehpanahi2@gmail.com |
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Abstract: (2055 Views) |
Background & aim: The optic pedicle is a key bony structure at the base of the skull that is essential in parasellar surgeries due to its proximity to the optic nerve and internal carotid artery and its connection to the paranasal sinuses (ethmoid, sphenoid, and occipital cells). Optic pedicle pneumatization can increase the risk of surgical complications such as optic nerve damage. Therefore, the aim of the present study was to determine and investigate the anatomical diversity, prevalence, and patterns of optic pedicle pneumatization using CBCT images in the population of Yasuj, Iran.
Methods: In the present descriptive-cross-sectional study conducted in 2022, information on 339 patients were collected from the archives of the maxillofacial radiology clinics of Yasuj using a simple random sampling method. CBCT images were collected, and the images were directly monitored on the monitor. CBCT images were examined in three sagittal, coronal, and axial planes. Identification of pneumatization and the frequency of its patterns based on the variables of the patients' gender and the pneumatization patterns of sphenoid, ethmoid, and odontoid cells was performed bilaterally by an otolaryngologist and a maxillofacial radiologist. The collected data were analyzed using t-test and chi-square tests.
Results: In the present study, CBCT images of 339 patients (64.30% female, 35.70% male) were analyzed. OS pneumatization was observed in 69.90% of patients (58.60% female, 41.40% male). The most common pattern was bilateral sphenoidal pneumatization (16.20%), followed by unilateral right-sided (15.30%) and unilateral left-sided (6.20%). Gender differences were significant only for the sphenoidal pattern (p=0.02), while ethmoidal and Onodi cell patterns showed no significant gender differences (p>0.05).
Conclusion: Knowledge of the prevalence and patterns of OS pneumatization, including sphenoidal, ethmoidal, and Onodi cell types, is crucial for reducing complications in paranasal surgeries, such as neurovascular injuries and cerebrospinal fluid leaks. This study provided a detailed classification of pneumatization patterns and recommends the use of surgical navigation systems and standardized radiology reporting to enhance safety and personalize skull base surgery protocols.
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| Keywords: Optic Strut, Pneumatization, Sphenoid, Ethmoid, Onodi cells, CBCT |
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Full-Text [PDF 582 kb]
(9 Downloads)
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Type of Study: Research |
Subject:
Clinical Surgery
Received: 2024/12/10 | Accepted: 2025/07/8 | Published: 2025/08/27
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