Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right middle lobe and right lower lobe collapse has significantly improved since ___ . However , right layering moderate pleural effusion has worsened since ___ . The left lower lung is still collapsed . Pulmonary edema is mild . The patient had prior sternotomy . Moderate - to - severe cardiac enlargement is stable . There is no pneumothorax .
    OUTPUT:
    
1 . Right middle lobe and lower lobe collapse has significantly improved since ___ . 2 . Worsening of moderate layering right pleural effusion . 3 . Unchanged mild pulmonary edema .