Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is mildly enlarged . The mediastinal and hilar contours are unchanged , with atherosclerotic calcifications noted at the aortic arch . The pulmonary vasculature is normal . Small right pleural effusion has decreased in size compared to the previous exam . Lungs are clear . No focal consolidation or pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Decreased size of small right pleural effusion . No new focal opacity to suggest pneumonia .