Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are normal . There is no focal consolidation , effusion or pneumothorax . There is no evidence of central vascular congestion or interstitial pulmonary edema . Mediastinal and hilar contours are stable . Mild cardiomegaly is unchanged .
    OUTPUT:
    
No evidence of vascular congestion or overt pulmonary edema . Stable mild cardiomegaly .