Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . The heart size remains mildly enlarged , and the mediastinal and hilar contours are unchanged . There is no pulmonary vascular congestion . Streaky opacity in the left lower lobe likely reflects atelectasis . There are small bilateral pleural effusions , perhaps minimally increased compared to the previous exam . No pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
No pulmonary edema . Small bilateral pleural effusions , perhaps minimally increased in size compared to the prior exam with left lower lobe atelectasis .