Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ . There has been no change . Lungs remain clear . Elevation left hemidiaphragm again noted . Cardiomediastinal silhouette is within normal limits . Right - sided central line and pacer leads are again noted . Osseous structures are unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .