Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right IJ central venous catheter ends in the right atrium . There is no focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is within normal limits . Incidental note is made of median sternotomy wires and left mediastinal surgical clips .
    OUTPUT:
    
1 . Expected postoperative appearance of the mediastinum . 2 . No evidence of acute cardiopulmonary process .