Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest film ___ at 08 :04 is submitted .
    OUTPUT:
    
Nasogastric tube is seen coursing below the diaphragm with the tip not identified . Endotracheal tube has its tip approximately 5 cm above the carina . The heart remains enlarged . Interstitial edema has slightly improved . Small right pleural effusion . No pneumothorax .