Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest PA and lateral radiograph demonstrates unremarkable mediastinal and hilar contours . Heart size is top normal . Patient is status post CABG with mediastinal clips evident . Clips also located in right breast . Sternotomy sutures are midline and intact . Lungs are clear . No pleural effusion , pneumothorax , or pneumoperitoneum evident .
    OUTPUT:
    
No acute intrathoracic process .