Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Well - inflated lungs are clear . There are no pleural effusions or pneumothorax . The cardiomediastinal and hilar contours are normal . Pulmonary vascularity is normal . No discrete nodules are appreciated .
    OUTPUT:
    
No acute cardiopulmonary process . No radiographic evidence of metastatic involvement .