Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP radiograph demonstrates no focal consolidation , pleural effusion or pneumothorax . Cardiomediastinal silhouette is unchanged . There is elevation of left hemidiaphragm , unchanged since ___ . Visualized osseous structures show no acute abnormality .
    OUTPUT:
    
No acute cardiopulmonary process .