Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . A small left pleural effusion is similar to ___ . Left retrocardiac atelectasis has improved . A small right effusion may be present . No pneumothorax or new consolidation is present . Median sternotomy wires are intact and mediastinal clips are in appropriate positions . No new abnormal cardiac and mediastinal contours are noted .
    OUTPUT:
    
Small left and trace right pleural effusion , similar to ___ . Overall , pulmonary aeration has improved .