Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is demonstrated . The aortic knob calcifications are present . The mediastinal contours otherwise are unremarkable . Lungs are hyperinflated , but otherwise clear without focal consolidation . No pleural effusion or pneumothorax is seen . There is no pulmonary edema . No acute osseous abnormalities demonstrated .
    OUTPUT:
    
No acute cardiopulmonary process .