Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No pleural effusion , pneumonia or pneumothorax . Stable mild cardiomegaly . Patient is status post median sternotomy as well as CABG . Top sternotomy wire has broken further since the prior study . Pacing wires to the right atrium are noted .
    OUTPUT:
    
No evidence of an acute cardiopulmonary process .