Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mild - to - moderately enlarged . The mediastinal and hilar contours appear unchanged . There is perihilar fullness and a central widespread diffuse abnormality with indistinct vascularity suggesting mild to moderate pulmonary congestion . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Findings suggesting mild to moderate pulmonary edema .