Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are moderately well - expanded and clear . No pleural effusion or pneumothorax . Prominent mediastinal contour is due to supine positioning . Heart size and hila are unremarkable . Limited assessment of the upper abdomen is within normal limits . Visualized osseous structures are unremarkable . No displaced rib fracture .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . No displaced rib fracture . 3 . No pneumothorax .