Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top - normal with on folding of the thoracic aortic arch . Cardiomediastinal silhouette and hilar contours are otherwise unremarkable . Mild right base atelectasis . Lungs are otherwise clear . No pleural effusion or pneumothorax . Tiny clips in the superior mediastinum noted .
    OUTPUT:
    
No acute cardiopulmonary abnormality .