Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right IJ Swan - Ganz catheter tip in the right lower lobe pulmonary artery , should be pulled back . Left IJ central line tip in the upper SVC , similar . There is cardiac enlargement , stable . Decreased pulmonary vascularity , with improved interstitial prominence since prior exam . Right costophrenic angle is not included on the radiograph .
    OUTPUT:
    
Mild interval improvement .