Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy . The patient has now been extubated . Lung volumes are unchanged . Support and monitoring equipment are otherwise unchanged in appearance . There is persistent elevation left hemidiaphragm with left lower lobe atelectasis . There are small bilateral pleural effusions . No pneumothorax seen .
    OUTPUT:
    
Unchanged left lower lobe atelectasis and left pleural effusion . Probable small right pleural effusion also .