Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest show a left - sided PICC line unchanged in position . No definite pneumothorax is visualized , although this study is limited . Probable small bilateral pleural effusions are unchanged . No pulmonary edema or vascular congestion is present . Expected postoperative enlargement of the cardiomediastinal silhouette is unchanged . The patient is status post median sternotomy and CABG with wires intact .
    OUTPUT:
    
1 . No definite pneumothorax . 2 . Stable postoperative appearance .