School ager with a cough for a week

CXR of chronic airway foreign body due to a screw in the right mainstem bronchus
Initial CXR AP and lateral (above) show symmetrical aeration of the lungs and a radiopaque object in the right mainstem bronchus along with dense opacities in the right middle and right lower lobes. CXR AP obtained after bronchoscopic removal of the foreign body (below) shows persistent opacity in the right middle lobe.

The diagnosis was a chronic airway foreign body in the form of a screw that had been present in the right mainstem bronchus for a week.