Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left pectoral pacemaker has 3 leads terminating in the right atrium , right ventricle , and coronary sinus . Prosthetic mitral and aortic valves are noted . There is no consolidation , pleural effusion , or pneumothorax . Mildly enlarged cardiac silhouette is similar as before . Left pulmonary artery is prominent as seen on prior CT .
    OUTPUT:
    
No radiographic evidence of pneumonia .