Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Cardiomediastinal and hilar contours are unremarkable . A coronary artery stent is in place . There is no pleural effusion or pneumothorax . Sternotomy wires are intact . Multiple clips within the mediastinum are from prior thoracic surgery .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .