Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pleural effusion which is now moderate has increased in size since prior . There may be trace right - sided pleural effusion as well . No convincing evidence for pneumonia . Cardiac silhouette is moderately enlarged as on prior . Median sternotomy wires are intact . No acute osseous abnormalities .
    OUTPUT:
    
Interval enlargement of the moderate left pleural effusion .