Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The patient is status post median sternotomy and CABG . The cardiomediastinal silhouette is stable , as are the hilar contours . There is persistent blunting of the left costophrenic angle . No large pleural effusion is seen . There is no focal consolidation or evidence of pneumothorax . No pulmonary edema is seen . Overall , there has been no significant interval change .
    OUTPUT:
    
No significant interval change .