School ager hit on right side by truck while riding bike with chest pain

CXR and CT of rib fracture and pulmonary contusion
CXR AP shows cortical irregularities of the right 6th and 7th ribs and no evidence of lung injury. Axial CT of the chest shows a large amount of airspace disease in the right lower lobe and a very small amount of free air anteriorly in the right hemithorax.

The diagnosis was right rib fractures and pulmonary contusion and a small anterior pneumothorax.