Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are within normal limits . The trachea is central . The cardiomediastinal contour is normal . The heart is not enlarged . No consolidation , pneumothorax or pleural effusion seen . A skin marker was placed over the right posterior lower ribs . No underlying rib fracture is seen .
    OUTPUT:
    
No acute cardiopulmonary process seen . No rib fracture seen .