Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size remains mildly enlarged . Mediastinal and hilar contours are relatively unchanged . Mild pulmonary edema is present with perihilar haziness and vascular indistinctness . There may be a trace left pleural effusion . Patchy bibasilar opacities likely reflect atelectasis . No pneumothorax is detected .
    OUTPUT:
    
Mild pulmonary edema and probable bibasilar atelectasis . Small left pleural effusion is likely present .