Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral images of the chest demonstrate well - expanded lungs , which are clear . There is no evidence of metastatic disease on this exam . There is no pneumothorax or pleural effusion . The aorta is slightly tortuous . Cardiomediastinal silhouette is otherwise unremarkable . Visualized osseous structures are unremarkable .
    OUTPUT:
    
Normal chest radiograph with no evidence of metastatic disease on this exam .