Fig. 1

a, b Computed tomography axial and sagittal images without contrast show hyper dense soft tissue in the expanded sphenoid sinus; its pneumatized portion of greater wing of sphenoid bones, clivus, and posterior ethmoid air cells. There is extension of soft tissue at the left orbital apex (blue arrow). Extension of lesion into sella is seen. Plain CT axial (c) and coronal bone window images (d) show completely thinned out and remodeled surrounding bony walls due to pressure necrosis. Complete rarified medial wall of bilateral internal carotid artery canals also seen (yellow arrows). e Post-operative axial bone window CT image shows air filled sinus cavity with absence of soft tissue