Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest radiograph ___ at 04 :32 is submitted .
    OUTPUT:
    
Left subclavian PICC line unchanged in position . Overall cardiac and mediastinal contours are stably enlarged . There has been interval improvement in the mild pulmonary edema with prominence of the perihilar vasculature suggesting a fluid replete state but no overt residual edema . No pneumothorax . No large effusions .