Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A venous catheter terminates in the superior vena cava . There is a calcified right breast implant . The heart is normal in size . The mediastinal and hilar contours appear within normal limits . The lungs appear clear . Based on elevation of the right hemidiaphragm and blunting of the right costophrenic sulcus , there may be mild chronic scarring or a very small effusion , but there is no sizeable pleural effusion . Mild degenerative changes are present along the thoracic spine .
    OUTPUT:
    
No evidence of acute disease .