Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate intact median sternotomy and cerclage wires , with a prosthetic aortic valve , in appropriate position , unchanged since the prior study . The lungs are well expanded and clear , with no pleural effusion , pulmonary edema , pneumothorax , or focal airspace consolidation . The heart is top normal in size .
    OUTPUT:
    
No acute cardiopulmonary process .