Day: February 21, 2025

School ager with right eyelid swelling and redness and right eye pain

CT of orbital cellulitis and subperiosteal abscess
Axial CT with contrast of the orbits (above) shows opacification of the right ethmoid sinus, inflammatory changes within the right orbit, and a low density oval fluid collection with an enhancing wall between the right medial rectus muscle and the right ethmoid sinus. Coronal CT (below) shows how this fluid collection is displacing the right medial rectus muscle laterally.

The diagnosis was right ethmoid sinusitis causing right orbital cellulitis and subperiosteal abscess.