Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient status post median sternotomy and CABG . Heart size remains mild to moderately enlarged . Mediastinal and hilar contours are relatively unchanged . There is no pulmonary edema . Streaky opacities in the lung bases are compatible with areas of atelectasis . Trace bilateral pleural effusions , right greater than left , are minimally increased on the right . No pneumothorax is identified . There are no acute osseous abnormalities .
    OUTPUT:
    
Bibasilar atelectasis and small bilateral pleural effusions , slightly increased on the right .