ArticleInternational archives of otorhinolaryngology2026
Aditus ad Antrum on Normal Temporal Bone CT Scan.
Article in International archives of otorhinolaryngology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: The aditus ad antrum is a structure located on the posterior wall of the tympanic cavity, connecting the epitympanum and mastoid antrum, playing a role in ventilating the mastoid antrum and air cells. However, there is limited in-depth research on this structure. Objective: To study the anatomy and morphology of the aditus ad antrum and evaluate its correlation with mastoid pneumatization using 3D MPR-reconstructed CT scans. Methods: This cross-sectional descriptive study was conducted using 101 normal temporal bone CT scans (190 ears) from individuals aged 16 years or older in Vietnam. The aditus was examined in three planes (axial, coronal, and sagittal) using 3D MPR reconstruction. Results: The aditus ad antrum morphology was classified into four groups, with group 2 being the most prevalent (48.42%). There was no correlation between aditus morphology and gender or ear side. Additionally, no relationship was found between mastoid pneumatization and aditus morphology. With increasing mastoid pneumatization, aditus ad antrum dimensions change. In individuals with two normal ears ( Conclusion: The aditus ad antrum may differ between the left and right ears in normal individuals and is not associated with mastoid pneumatization.
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