Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without consolidation or edema . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette has a normal post-operative appearance . The heart is mildly enlarged . Mediastinal clips and sternal wires are present .
    OUTPUT:
    
Expected post-operative appearance of the cardiomediastinal silhouette with mild cardiomegaly . No evidence of pulmonary edema .