Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is persistent asymmetric elevation of the left hemidiaphragm . The lungs are well inflated and grossly clear . The cardiomediastinal silhouette and hilar contours are stable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute pulmonary process . Elevated left hemidiaphragm again noted .