Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hypoinflated and clear . No pleural effusion or pneumothorax . Mild cardiomegaly is noted . Mediastinal contour and hila are unremarkable . Limited assessment of the upper abdomen is within normal limits . No obvious displaced rib fracture .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . No obvious displaced rib fracture . 3 . Mild cardiomegaly .