Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval placement of an ETT , with the tip approximately 4 .5 cm from the carina . Interval placement of a nasogastric tube , which traverses the diaphragm and ends in the stomach with the side hole just distal to the gastroesophageal junction . The lungs are hyper - expanded . Increased opacity in the left lower lung with silhouetting of the lateral border of the descending aorta but preservation of air bronchograms , new since the exam earlier on the same day . Right basilar atelectasis . No pleural effusion , pneumothorax , or pulmonary edema . The cardiac and mediastinal contours as well as hila and pleura are unchanged . Incidental interposition of the colon between the right hemidiaphragm and liver . No sub - diaphragmatic intra-abdominal free air . No acute osseous abnormality .
    OUTPUT:
    
New increased opacity with silhouetting of the lateral border of the descending aorta , suggestive of a consolidation in the retrocardiac region , which in the appropriate setting may represent an acute pneumonia .