Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is a small left pleural effusion . There is no pneumothorax or right pleural effusion . The lungs are well expanded and clear without focal consolidation concerning for pneumonia . Again seen is a left anterior wall pacemaker defibrillator with tips terminating in the right atrium and right ventricle as expected . Note is made of previous CoreValve procedure .
    OUTPUT:
    
Small left pleural effusion . No pulmonary edema or pneumonia .