Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , the postoperative cardiomediastinal silhouette has returned to ___ appearance similar to radiograph on ___ . The lungs are clear without focal consolidation . There is no vascular congestion or pulmonary edema . No pleural effusion or pneumothorax is seen . Median sternotomy wires are stable in position . .
    OUTPUT:
    
No acute cardiopulmonary process .