Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is re- demonstration of a mediastinal drain to the left of the trachea . There is an unchanged right chest tube . Residual oral contrast seen in the hepatic flexure and descending colon . Opacity along the right mediastinum is consistent with recent surgical history . Right lower lung platelike atelectasis is unchanged . There is no evidence of pneumothorax , pneumomediastinum , or consolidation . There is no evidence of pleural effusion .
    OUTPUT:
    
1 . Stable postsurgical changes . 2 . No evidence of pneumothorax , pneumomediastinum , or pleural effusion . 3 . Unchanged right mid and lower lung atelectasis .