Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Peripheral opacities seen predominately at the base of the right lung as well as at the base of the left lung ( more subtly ) are consistent with pulmonary contusions as better seen on recent chest CT . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Bilateral , peripheral opacities consistent with pulmonary contusions as seen on recent chest CT . Tiny pneumothorax seen on the preceding CT is not visible .