Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Lung volumes are low . Lungs are otherwise clear without focal consolidation demonstrated . No pleural effusion or pneumothorax is visualized . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .