Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest . The lungs are clear . The mediastinal , hilar , and cardiac contours are normal . A midline vascular stent is noted . There is mild blunting of the costophrenic angles bilaterally , which may represent basilar atelectasis . No other pleural is detected .
    OUTPUT:
    
No acute cardiopulmonary process .