Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: That right subclavian pheresis catheter is noted with the catheter tip at the proximal right atrium . No other central lines are identified . The lung volumes are low and exaggerated pulmonary vascular markings . Mild left basilar atelectasis / scarring persists ; otherwise the lungs are clear . Heart size remains top normal .
    OUTPUT:
    
Mild left basilar atelectasis / scarring with no acute cardiac or pulmonary process identified .