Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mild to moderately enlarged but unchanged . The mediastinal contour is similar with atherosclerotic calcifications noted at the aortic knob . Mild pulmonary vascular congestion is re - demonstrated . No focal consolidation , pleural effusion or pneumothorax is present . Hypertrophic changes are seen within the thoracic spine .
    OUTPUT:
    
Unchanged mild to moderate cardiomegaly and mild pulmonary vascular congestion .