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Anatomic Variants of Sphenoid Sinuses and Adjacent Structures: A Study of 225 Skull CT Scans at CNHU-HKM in Benin, West Africa

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Document pages: 10 pages

Abstract: Objective: This study aimed to describe anatomic variants of sphenoidal sinuses and adjacent structures. Methods: A retrospective and descriptive study was carried out at The National and University Teaching Hospital Hubert Koutoukou Maga (CNHU-HKM), of Cotonou in Benin from November 1st to December 31st. A review of CT scans skull was done for the subjects aged at least 16 years old. Anatomic variants of the sphenoid sinuses and adjacent structures have been investigated. Results: 225 CT scans of skull were analyzed. The sellar type was the most common type of pneumatization of sphenoid sinuses (74.7 ). Pneumatization of anterior clinoid processes of greater and lesser wings of the sphenoid and of pterygoid processes was observed in 7.1 ; 4.6 ; 3.3 and 7.3 ; respectively. Protrusion of carotid canals and optic canals, maxillary and vidian nerves were observed in 48.3 ; 13.1 ; 18 and 9.5 ; respectively. Conclusion: Risky anatomic variants of the sphenoid sinuses and adjacent structures are also described by CT-scan among Beninese. Before any surgery and to avoid bad outcome, a precise approach of these risky anatomic variants must be carried out by using CT-scan.

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