Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post midline sternotomy and CABG . Mild cardiomegaly and mediastinal widening appears improved compared to the prior exam . Right - sided Swan - Ganz catheter sheath terminates in the upper SVC . Overall , there has been slight interval increase in the diffuse moderate bilateral pulmonary edema as well as mild bibasilar atelectasis . Small right - sided pleural effusion is persistent . There is no pneumothorax . Visualized osseous structures are unremarkable .
    OUTPUT:
    
Interval increase in moderate bilateral pulmonary edema , compared to the prior exam .