Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left upper lobe is collapsed , with hyperexpansion of the superior segment of the left lower lobe . Numerous pulmonary metastases have increased in size compared with prior radiographs , but ___ metastases in the left lower lobe appear unchanged or slightly smaller . However , differences in lung volumes limit COMPARISON in of the lower lobes . There is no focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is within normal limits . A large staghorn calculus is present in the right kidney .
    OUTPUT:
    
Complete left upper lobe collapse , likely due to obstructing left hilar lesion or juxta hilar metastasis . Contrast - enhanced chest CT is recommended for further characterization . Bilateral pulmonary metastases . Right staghorn calcified renal calculus