Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There is no consolidation , pneumothorax , or edema . Mild cardiomegaly and tortuosity of the thoracic aorta is again noted as on prior . Median sternotomy wires and mediastinal clips are again noted .
    OUTPUT:
    
No acute cardiopulmonary process .