Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright portable chest radiograph was provided . Midline sternotomy wires are again noted . The right IJ sheath has been removed and there is now a right IJ TLC with its tip at the level of the cavoatrial junction . Lung volumes are quite low , which limits the evaluation . There is probable mild pulmonary edema , though overall there has been no significant change . No large pneumothorax . Heart size can not be assessed . Bony structures appear intact . There are likely small bilateral effusions , unchanged . There are clips in the left axilla and left upper quadrant .
    OUTPUT:
    
Right IJ TLC tip in the cavoatrial junction . Pulmonary edema persists . Evaluation limited due to low lung volumes .