Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains mild to moderately enlarged . Mediastinal and hilar contours are within normal limits . Pulmonary vasculature is not engorged . Lungs are clear . No focal consolidation , pleural effusion or pneumothorax is detected . No acute osseous abnormality is visualized . Degenerative changes at the thoracolumbar junction are noted .
    OUTPUT:
    
No acute cardiopulmonary abnormality .