Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . Mediastinal and hilar contours are unremarkable . Lungs are clear . Pulmonary vascularity is normal . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities identified .
    OUTPUT:
    
No acute cardiopulmonary abnormality .