Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Postoperative cardiomediastinal silhouette and hilar contours are unremarkable and stable . 3 lead AICD device positioning is unchanged . Several surgical clips project over the mediastinum and left hemi thorax . Lungs are clear . No pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality .