Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacemaker device is noted with leads terminating in the right atrium and right ventricle , unchanged . Mild to moderate cardiomegaly is again noted , with marked calcification of the aortic knob . The mediastinal and hilar contours are otherwise similar . There is minimal atelectasis in the left lung base . No focal consolidation , pleural effusion or pneumothorax is identified . Multiple clips are seen in the right upper quadrant the abdomen . There are multilevel degenerative changes in the thoracolumbar spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .