Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph was provided . There is diffuse ground - glass opacity which is concerning for pulmonary edema superimposed on the background of pulmonary fibrosis . Hilar congestion is also noted . No pneumothorax . Evaluation for effusion or subtle pneumonia is limited . Bony structures appear grossly intact .
    OUTPUT:
    
Findings compatible with pulmonary edema superimposed on known background of interstitial fibrosis . Please refer to subsequent CT chest for further details .