Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates an enlarged cardiac silhouette . Mild bibasilar opacities are noted , most likely consistent with atelectasis . No definite large pleural effusion or pneumothorax is identified . The pulmonary vasculature is mildly indistinct with scattered regions of peribronchial cuffing , in the appropriate clinical context , could represent mild edema . No definite septal lines are identified .
    OUTPUT:
    
Possible mild edema without definite focal consolidation identified .