Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . The cardiac silhouette is mildly enlarged . The mediastinal contours are not widened and are without significant interval change . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . No pulmonary edema is seen . Right upper quadrant surgical clips are again seen .
    OUTPUT:
    
Mildly enlarged cardiac silhouette . The mediastinum is not widened and is similar in appearance compared to the prior study .