Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is unchanged . The mediastinal and hilar contours are within normal limits . Mild pulmonary vascular congestion is similar to that seen on the previous study . There is no overt pulmonary edema . No focal consolidation , pleural effusion or pneumothorax is present . Minimal atelectasis is noted in the left lower lobe . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild cardiomegaly and mild pulmonary vascular congestion , similar to that seen on the previous radiograph .