Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . No focal opacity suggestive of metastatic disease is seen . There is no pleural effusions or pneumothorax . The hilar and mediastinal contours are unremarkable . The visualized osseous structures are unremarkable .
    OUTPUT:
    
No focal opacities identified to suggest pulmonary metastasis .