Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size remains mildly enlarged , and the mediastinal and hilar contours are stable with tortuosity of thoracic aorta again noted . Mild pulmonary vascular prominence is unchanged , but no overt pulmonary edema is seen . No focal consolidation , pleural effusion or pneumothorax is present . An inferior vena cava filter is partially imaged , and clips in the right upper quadrant denote prior cholecystectomy . Right acromioclavicular degenerative changes are noted .
    OUTPUT:
    
No radiographic evidence for pneumonia .