Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mild to moderately enlarged but unchanged . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is not engorged . Lung volumes are low without focal consolidation . No pleural effusion or are pneumothorax is present . There is minimal atelectasis in the lung bases . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .