Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been placement of a Swan - Ganz catheter and Impella device . Both are in satisfactory position . Heart size is enlarged as before . Mild interstitial edema has improved . No large pleural effusions .
    OUTPUT:
    
Satisfactory position of Swan - Ganz catheter and Impella device . Mild interstitial edema improved since prior .