Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sternotomy wires are intact . Mitral valve replacement is unchanged in position . Mild improvement in left lower lobe atelectasis , moderate left pleural effusion , and small right pleural effusion . No new focal opacity , pneumothorax or pulmonary edema . Heart size is partially obscured by pleural parenchymal disease with otherwise normal mediastinal and hila . Vascular clips noted .
    OUTPUT:
    
1 . Mild improvement in left lower lobe atelectasis , moderate left pleural effusion , and small right pleural effusion . 2 . No pneumothorax .