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Pneumatization of the sphenoid sinus

¹ Oral Radiology, Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil; ² Oral Radiology, Department of Oral Diagnosis, School of Dentistry, Pontificy Catholic University, Belo Horizonte, MG, Brazil

View larger version (104K): [in a new window]   Figure 1 Panoramic radiograph showing a well-defined radiolucent image with a sclerotic margin in the area of the pterygoid process on the left side (black arrow)

View larger version (138K): [in a new window]   Figure 2 Lateral skull radiograph showing the lesion in the pterygoid process region (black arrow)

View larger version (138K): [in a new window]   Figure 3 Axial CT scan showing the extension to the greater wing of sphenoid bone on the left side

View larger version (145K): [in a new window]   Figure 4 Axial CT scan showing the extension to the superior portion of the pterygoid process on the left side

View larger version (134K): [in a new window]   Figure 5 Coronal CT scan confirming the extension of the sphenoid sinus to other parts of the bone