Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Relatively low lung volumes persist . There is chronic blunting of the right costophrenic angle . No pleural effusion is seen . The cardiac and mediastinal silhouettes are stable and unremarkable . Chronic changes at the superior left hemi thorax are again noted . Punctate linear metallic foreign body again seen projecting over the left lower lobe .
    OUTPUT:
    
No acute cardiopulmonary process .