Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is top normal . Mediastinal and hilar contours are unremarkable given supine positioning and technique . Pulmonary vasculature is not engorged . No focal consolidation , pleural effusion or pneumothorax is present . Minimal atelectasis is likely present at the lung bases . No displaced fractures are clearly visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Low lung volumes .