Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to ___ radiograph , marked elevation of the right hemidiaphragm has slightly increased in severity , with persistent adjacent linear atelectasis or scarring . Lungs are otherwise clear , and cardiomediastinal contours are stable in appearance . No pleural effusion .
    OUTPUT:
    
No radiographic evidence of active or latent pulmonary tuberculosis infection . Chronic elevation of right hemidiaphragm .