Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior radiograph there is a widened appearance to the superior mediastinum likely postoperative in nature . There is subcutaneous emphysema within the neck . There are bilateral chest tubes in place without any evidence of pneumothorax . Median sternotomy wires are intact . There is mild prominence of the pulmonary vasculature consistent with mild fluid overload . Linear opacities at the bases is most consistent with atelectasis .
    OUTPUT:
    
1 . Widened mediastinum and cervical subcutaneous emphysema likely postoperative . 2 . Mild fluid overload . 3 . Bilateral atelectasis .