Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs remain relatively hyperinflated , suggesting chronic obstructive pulmonary disease . Platelike right base atelectasis is seen . There are subtle scattered areas of opacity projecting over the lateral left upper to mid lung , and possibly to a lesser extent over the right lung , which may be related patient 's known metastatic disease , but underlying infection is not excluded . There is slight blunting of the costophrenic angles and trace pleural effusions may be present . The cardiac silhouette is top - normal . The mediastinal contours are stable .
    OUTPUT:
    
Bilateral nodular opacities may relate to patient 's known at metastatic disease , however , findings appear worse as compared to ___ which may be due to progression of disease , however , superimposed infectious process is not excluded . Probable trace bilateral pleural effusions .