Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest film ___ at 05 :52 is submitted .
    OUTPUT:
    
Tracheostomy tube and right subclavian PICC line are unchanged position . The heart remains stably enlarged . Mediastinal contours are unchanged . Overall , the diffuse airspace opacities are improving suggesting resolving but persistent moderate pulmonary and interstitial edema . There is likely a layering left effusion . No pneumothorax .