Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy , CABG , and mitral valve repair . The cardiac silhouette size remains mildly enlarged . The aorta is slightly tortuous . Mild pulmonary vascular congestion is present . Bibasilar airspace opacities presents , likely atelectasis , though infection can not be excluded . Small bilateral pleural effusions are relatively unchanged . There is no pneumothorax . No acute osseous abnormality is seen .
    OUTPUT:
    
Mild pulmonary vascular congestion with small bilateral pleural effusions and likely bibasilar atelectasis . Please note that infection at the lung bases can not be completely excluded .