Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there has been no significant change . There is persistent elevation of the left hemidiaphragm . There are postsurgical changes in the left hemithorax . The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . Cardiomediastinal silhouette is slightly decreased from prior .
    OUTPUT:
    
No acute cardiopulmonary process .