Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since prior , the endotracheal and enteric tubes are no longer seen . The lungs are clear besides mild right apical pleural based scarring . The cardiomediastinal silhouette is within normal limits . Atherosclerotic calcifications are noted at the aortic arch . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .