Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph demonstrates stable moderate cardiomegaly with central vasculature congestion and diffuse bilateral patchy opacities with a perihilar distribution , right greater than left with appearance of pulmonary edema . Opacities are greater on the right than left , which may be due to assymetric pulmonary edema , but a superimposed infectious process is not excluded . Retrocardiac opacity is likely reflection of atelectasis , edema and possibly small left pleural effusion . Minimal blunting of costophrenic angle on the right may be due to a trace right pleural effusion .
    OUTPUT:
    
Moderate cardiomegaly . Pulmonary edema , possibly assymetric . Opacities are greater on the right than left , which may be due to assymetric pulmonary edema , but a superimposed infectious process is not excluded . Retrocardiac opacity , likely edema and possibly small left effusion .