School ager with left eye swelling

CT of subperiosteal abscess
Axial CT with contrast of the orbits shows opacification of the left ethmoid sinus and bilateral sphenoid sinuses along with pre and post-septal inflammation of the left orbit. A lenticular fluid collection with rim enhancement is present along the medial wall of the left orbit.

The diagnosis was orbital cellulitis with a subperiosteal abscess.