Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild to moderate cardiomegaly is unchanged . The mediastinal and hilar contours are within normal limits . Mild upper zone vascular redistribution suggests mild pulmonary vascular congestion without overt pulmonary edema . Streaky bibasilar opacities likely reflect areas of atelectasis . No focal consolidation , pleural effusion or pneumothorax is present .
    OUTPUT:
    
Mild pulmonary vascular congestion without overt pulmonary edema .