Grossly expanded osseous structures including the right squamotemporal petrous temporal bone, central and right sphenoid bone with complete obliteration of right maxillary sinus and sphenoid sinus and most of the right ethmoid air cells. This has characteristic appearances of fibrous dysplasia.
Despite marked expansion of many osseous structures including the anterior clinoid and the orbital walls, there is no crowding of the right orbital apex and right-sided skull base foramina including the orbital fissures, optic canal and foramen rotundum are not significantly narrowed. No evidence of right optic nerve compression or atrophy.
The pituitary fossa is near normal in size despite fibrous dysplasia involving the surrounding osseous structures.
The posterior pituitary bright spot is normal and intact and infundibulum is midline. The right side of the sella contains a 5 mm hypo enhancing structure which could represent a small pituitary adenoma in this clinical context.