Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior film , the right subclavian line has been retracted . The tip now overlies the proximal SVC , probably near the junction with the innominate vessel . No pneumothorax is detected . Again seen is atelectasis at the left base , with an elevated left hemidiaphragm . The degree of left base opacity is slightly worse , but overall similar . Mild prominence of the upper zone vessels is similar to the prior exam and likely accentuated by low inspiratory volumes . Doubt overt CHF . Left axillary clips again noted . The patient 's known left breast implant is not well appreciated radiographically .
    OUTPUT:
    
Interval retraction of right subclavian line , with tip now overlying the proximal SVC .