Findings:
Expanded right sphenoid bone, which appears as heterogenous, predominantly signal void on all sequences with significant, peripheral enhancement in post-contrast study. The lesion measures about 2.8 X 2.4 X 3.7 cm in its maximal axial and craniocaudal dimensions.
It is seen indenting the posterior and lateral orbital wall, displacing the right lateral rectus muscle anteromedially with mild right proptosis.
The smooth meningeal thickening and enhancement seen along the anterior and middle cranial fossa is intimately associated with the right sphenoid bone, resulting in dural tail attachment.
Mild post-operative drive thickening and enhancement is seen underneath the right frontotemporal cranioplasty with old any nodular components.
No other calvarial or skull base or intra-axial enhancing masses. The brain parenchyma and the intracranial circulation are unremarkable.
The pituitary gland is normal.
Complete opacification of the maxillary sinuses is seen bilaterally. The paranasal sinuses and the mastoid air cells are otherwise clear.
The craniocervical junction is normal.
Conclusion:
Features compatible with right sphenoid wing en plaque meningioma, with marked right-sided proptosis.