Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette is exaggerated by mediastinal fat . Borderline cardiomegaly is noted . Blunting of the left costophrenic angle is unchanged since ___ and may represent small pleural effusion . Bibasilar atelectasis is noted . No pneumothorax .
    OUTPUT:
    
Trace left pleural effusion . Bibasilar atelectasis . No focal consolidation .