Sinuses are air-filled sacs (empty spaces) on either side of the nasal cavity that filter and clean the air breathed through the nose and lighten the bones of the skull. There are four paired sinuses ...
Meningioma (Sphenoid Wing). (Left) T1-weighted with gadolinium sagittal MRI; (Right) T1-weighted with gadolinium coronal MRI. Note that on the coronal and sagittal scans, it is clear that the mass is ...