Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate unremarkable cardiomediastinal and hilar contours . Faint opacification on the lateral view with no clear correlate on the right may reflect atelectasis versus patient positioning . No definite pneumonia or aspiration evident . No pneumothorax or pleural effusion . No displaced rib fractures identified .
    OUTPUT:
    
Faint lower lung opacification on lateral view without correlate on frontal view likely reflects atelectasis or patient positioning . No rib fractures or pneumothorax .