Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size remains mildly enlarged . Mediastinal and hilar contours are unchanged and within normal limits . Pulmonary vasculature is not engorged . Lung volumes are low , but the lungs are clear . No focal consolidation , pleural effusion or pneumothorax is present . There are no acute osseous abnormalities detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .