Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy . Mitral annular calcifications are prominent . The heart is again markedly enlarged . The mediastinal and hilar contours appear unchanged . There is a mild - to - moderate interstitial abnormality corresponding to pulmonary edema , which appears worse than on the prior radiographs . A small - to - moderate left - sided pleural effusion is suspected , but difficult to compare to the prior studies . On the right , aeration has improved , but there is probably still patchy right lower lobe opacification , suggesting atelectasis , but not specific . A small pleural effusion is also suspected on the right . There is no pneumothorax .
    OUTPUT:
    
Findings consistent with mild - to - moderate pulmonary vascular congestion . Persistent left - sided pleural effusion and patchy basilar opacities , not specific , although typical for atelectasis .