Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest demonstrate elevation of the left hemidiaphragm , more pronounced compared to the prior study . The lungs are clear without focal consolidation concerning for pneumonia , significant pleural effusion , or pneumothorax . The cardiac silhouette top normal size , unchanged . The mediastinal and hilar contours are within normal limits allowing for slight patient rotation .
    OUTPUT:
    
No radiologic evidence of acute thoracic abnormality .