Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size remains mildly enlarged but unchanged . Atherosclerotic calcifications are noted within the aortic knob . Mediastinal and hilar contours are similar . Pulmonary vasculature is normal . Linear opacities within the lung bases are compatible with areas of subsegmental atelectasis . There is no focal consolidation , pleural effusion or pneumothorax . Partially imaged is a stent within the proximal abdominal aorta .
    OUTPUT:
    
No acute cardiopulmonary abnormality .