Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Better seen on a recent comparison chest CT , there are numerous soft tissue nodules throughout the lungs bilaterally , worse on the right , compatible with metastases . The largest of these is located adjacent to the right heart border , in the area of heterogeneous opacity on the current chest radiograph . Increase opacity at the right lung base is in part due to known metastatic disease , however , superimposed infection would be difficult to exclude in light of the lack of recent prior chest radiographs . The heart is normal in size and there is no pneumothorax . Large hiatal hernia is again seen .
    OUTPUT:
    
Numerous pulmonary metastases obscure the right lower lung field , and superimposed infection can not be excluded .