Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear with the exception of bibasilar left greater than right atelectasis and small left effusion . There is no pneumothorax . The pulmonary vasculature is normal . The cardiac silhouette is normal in size , the mediastinal contours are normal . The patient is intubated , the tip of the endotracheal tube is positioned no less than 4 cm from the level of the carina . An NG tube is in place with its side hole in the distal esophagus and its tip barely protruding into the expected location of the gastric fundus .
    OUTPUT:
    
1 . NG tube side port in the distal esophagus , which should be advanced at least 8 cm for improved positioning . 2 . No evidence of pneumonia .