Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior radiograph there has been no significant change . There is no focal consolidation , pleural effusion , pneumothorax or pulmonary edema . Cardiomediastinal silhouette is unchanged and notable for tortuous aorta and mild cardiomegaly . Median sternotomy wires are present and intact . Clips are seen in the midline of the thorax . Bony structures are intact .
    OUTPUT:
    
No significant change since the prior study and no evidence of overt pulmonary edema .