Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . There are mild bilateral basilar and perihilar opacities , and bulging of the SVC consistent with mild pulmonary edema . No pleural effusion or pneumothorax . The heart size is top normal . The mediastinal and hilar contours are normal . There is no focal consolidation .
    OUTPUT:
    
Mild pulmonary edema .