Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is post right lower lobectomy . Bibasilar atelectasis is noted . There is elevation of the right hemidiaphragm . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . Prior right thoracotomy changes are noted .
    OUTPUT:
    
Post right lower lobectomy changes . No evidence of pneumonia .