Axial (above left) CT with contrast of the face shows a large expansile mass filling the sphenoid sinus that has punctate calcifications within it and that is thinning the surrounding bone. Sagittal CT (above right) shows the mass to be arising from the top of the clivus. Coronal T2 MRI (below left) shows the mass to be heterogeneously bright and to not have any intracranial extension. Axial T1 MRI with contrast (below right) show the mass does not enhance.