Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A lordotic projection was obtained . Heart size appears mildly enlarged , similar to the previous study . The mediastinal and hilar contours are grossly unchanged . There is mild upper zone vascular redistribution compatible with mild pulmonary vascular congestion . No definite focal consolidation , large pleural effusion or pneumothorax is seen , however , the right costophrenic angle is not completely encompassed in the field of view . There are no acute osseous abnormalities .
    OUTPUT:
    
Mild pulmonary vascular congestion .