<abstract xmlns="http://www.w3.org/1999/xhtml">
<sec><h3>Objectives: </h3>
<p>Canalis basilaris medianus (CBM) is a unique anatomical variation located in the basal occipital region of the skull, rarely encountered in head and neck radiographic imaging. The aim of the present study was to evaluate the prevalence and types of CBM using Cone Beam Computed Tomography (CBCT) scans.</p>
</sec>
<sec><h3>Materials and Methods: </h3>
<p>CBCT (Full FOV) images of 200 patients aged between 10 to 70 years were selected for the current retrospective study following the inclusion and exclusion criteria. The image sections from the scan data were scrutinized for the presence of CBM, in addition to its classification based on the type of morphology. The presence and types of CBM were recorded based on the age and gender. The chi-square test was used to analyze the presence and types of CBM with regard to gender and age group.</p>
</sec>
<sec><h3>Results: </h3>
<p>The overall prevalence of CBM was estimated as 9.5%. CBM was present in 13% of males and 3% of females (p = 0.021). Considering the types of CBM, the superior recess type was predominantly observed followed by the inferior recess, superior and inferior type. However, there was no significant gender-based differences noted among the types of CBM (p > 0.05). Also, there was no statistically significant difference noted in the prevalence of CBM in different age groups (p > 0.05).</p>
</sec>
<sec><h3>Conclusion: </h3>
<p>It is necessary for maxillofacial radiologists to have a solid understanding of both normal and variant skull-base anatomy to facilitate recognition of variants such as CBM in order to recognize the associated anomalies. To our knowledge, this was the first study done which assesses the gender-based differences among the various types of CBM.</p>
</sec>
</abstract>

Objectives: 
Canalis basilaris medianus (CBM) is a unique anatomical variation located in the basal occipital region of the skull, rarely encountered in head and neck radiographic imaging. The aim of the present study was to evaluate the prevalence and types of CBM using Cone Beam Computed Tomography (CBCT) scans.

Materials and Methods: 
CBCT (Full FOV) images of 200 patients aged between 10 to 70 years were selected for the current retrospective study following the inclusion and exclusion criteria. The image sections from the scan data were scrutinized for the presence of CBM, in addition to its classification based on the type of morphology. The presence and types of CBM were recorded based on the age and gender. The chi-square test was used to analyze the presence and types of CBM with regard to gender and age group.

Results: 
The overall prevalence of CBM was estimated as 9.5%. CBM was present in 13% of males and 3% of females (p = 0.021). Considering the types of CBM, the superior recess type was predominantly observed followed by the inferior recess, superior and inferior type. However, there was no significant gender-based differences noted among the types of CBM (p > 0.05). Also, there was no statistically significant difference noted in the prevalence of CBM in different age groups (p > 0.05).

Conclusion: 
It is necessary for maxillofacial radiologists to have a solid understanding of both normal and variant skull-base anatomy to facilitate recognition of variants such as CBM in order to recognize the associated anomalies. To our knowledge, this was the first study done which assesses the gender-based differences among the various types of CBM.

Canalis Basilaris Medianus as an Anatomical Variation in the Basilar Part of the Occipital Bone: A Descriptive Cone Beam Computed Tomographic Study

Department of Oral Medicine and Radiology, AB Shetty Memorial Institute of Dental Sciences

Acta Medica Bulgarica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Objectives: 
Canalis basilaris medianus (CBM) is a unique anatomical variation located in the basal occipital region of the skull, rarely encountered in head...

Canalis Basilaris Medianus as an Anatomical Variation in the Basilar Part of the Occipital Bone: A Descriptive Cone Beam Computed Tomographic Study

Published Online: Mar 16, 2024

Page range: 36 - 42

Received: Jan 18, 2023

Accepted: Apr 20, 2023

DOI: https://doi.org/10.2478/amb-2024-0006

Keywords
Canalis basilaris medianus, Skull base, Anatomic variation, Cone Beam Computed Tomography

© 2024 D. Darwin et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Canalis Basilaris Medianus as an Anatomical Variation in the Basilar Part of the Occipital Bone: A Descriptive Cone Beam Computed Tomographic Study

Published Online: Mar 16, 2024

Page range: 36 - 42

Received: Jan 18, 2023

Accepted: Apr 20, 2023

DOI: https://doi.org/10.2478/amb-2024-0006

KeywordsCanalis basilaris medianus, Skull base, Anatomic variation, Cone Beam Computed Tomography

© 2024 D. Darwin et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Canalis basilaris medianus, Skull base, Anatomic variation, Cone Beam Computed Tomography