Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right middle lobe cavitation seen on prior chest CT examination has thinner walls reflecting improving infection . Right lower and middle lobe scarring is stable . The mediastinal contour , cardiac border , and bilateral hemidiaphragms are normal without evidence of focal consolidation or pleural effusion . There is no pulmonary edema or pneumothorax . A right dual - lumen infusion port is present with distal tip terminating in the lower SVC .
    OUTPUT:
    
1 . Improving right middle lobe cavitation . 2 . Right infusion port in appropriate position .