Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sternotomy wires are intact and mitral valve replacement noted . Interval decrease in left lower lobe atelectasis and left pleural effusion with no interval change in small right pleural effusion . No new focal opacity , pneumothorax or pulmonary edema . Heart size is top normal with normal mediastinal contour and hila . No bony abnormality .
    OUTPUT:
    
Mild interval decrease in left lower lobe atelectasis and pleural effusion with unchanged small right pleural effusion .