Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate well expanded and clear lungs . Heart is normal in size and cardiomediastinal contour is unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Normal chest radiograph . 2 . No displaced rib fracture identified . However , please note that conventional chest radiographs are not sensitive for detection of rib fractures .