Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral , left greater ___ right , lower lobe opacities most likely represent aspiration or atelectasis . The heart size is mildly enlarged . Mediastinal contours are normal . There no effusion or pneumothorax . No rib fractures are identified .
    OUTPUT:
    
Bilateral aspiration or atelectasis . Mild cardiomegaly . Chest radiographs are not sensitive for detecting subtle rib trauma . If there are focal areas of pain , dedicated views of those areas are recommended .