Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrates the lungs are well - expanded and clear . The cardiomediastinal silhouette is unremarkable . There is no pneumothorax or pleural effusion . Diffuse sclerotic appearance of the visualized osseous structures is unchanged , representing known diffuse prostate cancer metastases .
    OUTPUT:
    
No acute cardiopulmonary process .