Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . Bibasilar linear atelectasis noted . Likely trace left pleural effusion . No pneumothorax . Mild cardiomegaly is as before . Right - sided central line terminates in the SVC as before . Sternotomy sutures overlie the midline .
    OUTPUT:
    
Low lung volumes with bibasilar linear atelectasis , no pulmonary edema . Likely trace left pleural effusion , no pneumothorax .