Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , opacification of the left hemithorax has improved , with persistent suspected atelectasis of the left lower lobe . No pneumothorax or new right - sided pleural effusion . Mild pulmonary edema is new . The right lung is grossly clear . Unchanged appearance of the intact median sternotomy wires , mitral valve replacement , and dilated left atrium .
    OUTPUT:
    
1 . No new focal consolidation concerning for pneumonia . New mild pulmonary edema . 2 . Improved opacification of the left hemi thorax , with persistent suspected atelectasis of the left lower lobe .