Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest ___ at 14 :21 are submitted .
    OUTPUT:
    
Small layering bilateral pleural effusions with patchy bibasilar airspace opacity , left greater than right , consistent with partial lower lobe atelectasis in the setting of small effusions . Status post median sternotomy with stable postoperative cardiac and mediastinal contours . Stable relatively symmetric biapical pleural irregularity presumably related to postinflammatory changes . No pulmonary edema or pneumothorax . No focal airspace consolidation to suggest pneumonia .