Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes with collapse of the left lower lobe . There is mild pulmonary edema . There is a small right and a small moderate left pleural effusions , increased from prior exam . Median sternotomy wires and mediastinal clips are noted .
    OUTPUT:
    
Mild pulmonary edema . Left lower lobe collapse . Increased bilateral pleural effusions , left greater than right .