Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest provided . As compared to prior study , degree of pulmonary edema is not significantly changed . There is slight increase in retrocardiac atelectasis . No large pleural effusions are seen . Mild cardiomegaly remains stable . Swan - Ganz catheter has been retracted slight and terminates in right main pulmonary artery . Endotracheal tube is in appropriate position . Nasogastric tube courses towards the stomach and out of view .
    OUTPUT:
    
Endotracheal and Swan - Ganz catheter in appropriate positions .