Key Information to Be Provided by Imaging
• Demonstration that the expansile submucosal subcutaneus lesion is due to an abnormal pneu-matization of a sinusal cavity
• Assessment of the actual size of the involved sinus(es)
• Precise definition of bony wall thickness, with special reference to the presence of areas of resorption (partial or complete)
• Involvement of critical areas (i.e., orbit, optic canal)
• Possible presence of lesions arising from bone or neoplasms associated with the abnormal pneuma-tization
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