Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph redemonstrates the nasogastric tube in the mid neoesophagus , a right chest tube , and a right chest drain , all unchanged in position . Unchanged lucency under the diaphragm mostly represents distended colon , as well as possibly a small amount of postoperative pneumoperitoneum . Mediastinal widening is decreased , without evidence of mediastinal fluid collection or unexpected distention of the neoesophagus . Bibasilar atelectasis is improved . A tiny probable effusion is unchanged . There is no pneumothorax or focal consolidation concerning for pneumonia .
    OUTPUT:
    
1 . No pneumothorax . 2 . Decreased mediastinal widening and improved bibasilar atelectasis . 3 . Unchanged subdiaphragmatic lucency mostly represents distended colon , as well as possibly a small amount of postoperative pneumoperitoneum .