Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate well - expanded lungs . Heart is normal in size and cardiomediastinal contours are unremarkable . Lungs are clear . There is no pleural effusion and no pneumothorax . No definite rib fractures .
    OUTPUT:
    
No acute cardiopulmonary abnormality . No displaced rib fractures seen based on this nondedicated examination .