School ager in a motor vehicle collision

CXR and CT of pulmonary laceration
CXR AP (above) shows extensive opacification of the right middle and lower lobes with a small cystic structure in the middle. Axial CT with contrast of the chest (below) shows a multiseptated lesion containing air and blood in the right lower lobe.

The diagnosis was pulmonary laceration / traumatic hematopneumatocele.