Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . In this patient with known metastatic disease of the chest , there is essentially no change in the large masses that occupying the left lower lobe and left upper lobe compared with a prior study from earlier this month . The right lung remains clear . A small left effusion is difficult to exclude . No right effusion seen . Cardiomediastinal silhouette is stable . Bony structures intact .
    OUTPUT:
    
Left lung lesions , better assessed on prior CT , compatible with metastasis without definite interval change .