The CT (computed tomography) scan of paranasal sinuses (Figure 1) showed a radio-opaque foreign body (FB) in the left ethmoid sinus with opacification of all sinuses on the left side. The patient ...

A concha bullosa is created by air in the middle turbinate, seen on the left at (C). This normal anatomic variant arises from migration of ethmoid sinuses into the middle turbinate. This may cause ...