Giant cell tumor of the sphenoid bone.

A case of giant cell tumor of the sphenoid bone is reported, the first case in which a computed tomogram is available. The radiologic features of the neoplasm resembled both pituitary adenoma and parasellar meningioma, but with more bone destruction. It is appropriate to consider this lesion in the differential diagnosis of a parasellar mass in a teenage or young adult patient when extensive bone destruction is present.