Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi-upright portable AP view of the chest was obtained . Midline sternotomy wires and mediastinal clips are again seen as is a dialysis catheter with right IJ approach with tip in the expected location of the right atrium . Cardiomegaly is stable with mild pulmonary edema . No definite signs of pneumonia or large effusion . No pneumothorax is seen . Bony structures appear intact .
    OUTPUT:
    
Cardiomegaly , mild edema .