Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The vague right middle lobe opacity on the prior chest radiograph is no longer visualized . There are no new areas of focal consolidation . There is no pleural effusion or pneumothorax . The cardiac and mediastinal contours are unchanged with a tortuous aorta . An old right rib fracture is again seen .
    OUTPUT:
    
Resolution of right middle lobe opacity .