Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New compared to prior is left basilar opacity . Some of this opacity is peripheral likely due to loculated fluid although underlying parenchymal consolidation is also suspected . There is a small right effusion . Superiorly the lungs are clear . Left chest wall dual lead pacing device is noted . Median sternotomy seen aortic valve replacement are noted . No acute osseous abnormalities .
    OUTPUT:
    
Small right effusion and moderate left effusion which appears partially loculated . Consolidation at the left lung base may represent atelectasis or superimposed infection .