Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior study , the small right pleural effusion with a small fissural component is minimally smaller . The lungs are otherwise clear . Sternal wires are intact and well aligned . Cardiomediastinal silhouette is normal . Aortic valve replacement is noted .
    OUTPUT:
    
Small right pleural effusion including a small fissural component , minimally smaller compared to ___ .