Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube is no longer clearly visualized . The right PICC is unchanged in position terminating at cavoatrial junction . The nasogastric tube courses below the left hemidiaphragm , tip not imaged . Cardiomegaly and mediastinal silhouettes are stable . Mild pulmonary edema persists .
    OUTPUT:
    
No substantial change from prior .