Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a right port with tip terminating in the cavoatrial junction . The cardiomediastinal and hilar contours are stable with mild tortuosity of the descending aorta . There is no pleural effusion or pneumothorax . There is no focal consolidation concerning for pneumonia . Pulmonary vasculature is within normal limits .
    OUTPUT:
    
No sign of active or prior TB infection .