Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Supine portable view of the chest demonstrates left internal jugular central venous catheter tip projecting over cavoatrial junction . No pneumothorax . The endotracheal tube terminates 4 cm above the carina . Nasogastric tube terminates within the esophagus . Low lung volumes accentuate bronchovascular markings . Hilar and mediastinal silhouettes are unchanged . Heart is moderately enlarged .
    OUTPUT:
    
1 . Left internal jugular central venous catheter projects over cavoatrial junction . 2 . Nasogastric tube remains in the esophagus . Further advancement is advised .