Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable supine chest radiograph was obtained . Endotracheal tube is in the lower trachea , approximately 1 .7 cm above the carina . Nasogastric tube courses below the diaphragm and terminates within the stomach . The lung volumes are low . There are bibasilar opacities that may represent atelectasis . There is mild prominence of the interstitial markings , which may represent mild pulmonary congestion . Cardiac silhouette appears slightly enlarged . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . ET tube and NG tube in appropriate position . Linear bibasilar opacities may represent atelectasis . 2 . Developing pulmonary edema .