Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is chronic elevation of the right hemidiaphragm as seen on prior studies . There is no focal consolidation or pleural effusion . Tortuous descending thoracic aorta is again noted . Heart size and mediastinal contours are stable . No pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of pneumonia .