Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is pulmonary vascular congestion with mild pulmonary edema . Retrocardiac left base is opacified , which could be due to prominent vessels with fluid overload , although underlying atelectasis and small effusion may be present , although no evidence of effusion is substantiated on the lateral view . Cardiac silhouette is top normal to mildly enlarge . The mediastinal and hilar contours are stable . Right mid to upper lung nodular opacity measuring approximately 9 mm is again seen , not enlarged in size since the prior study .
    OUTPUT:
    
Mild pulmonary edema . Stable right mid to upper lung nodular opacity .