Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sternotomy wires are midline and intact . Cardiomediastinal and hilar contours are stable compared to the most recent prior examination . There is increased pulmonary edema . There is no pneumothorax . A right subclavian central venous catheter tip projects over the expected region of the low SVC . Right basilar atelectasis is noted . Retrocardiac opacificaton is increased since the most recent prior examination and may represent atelectasis versus infection .
    OUTPUT:
    
1 . Pulmonary edema has increased since the prior exam . 2 . Increased retrocardiac opacification which may represent atelectasis versus infection .