Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is moderate to severely enlarged . Cardiac , mediastinal and hilar contours appear unchanged . In addition to mild background congestion there is a new diffuse mild to moderate interstitial abnormality most consistent with pulmonary edema . There is no definite pleural effusion or pneumothorax . Inferior vena cava filter projects over the right upper abdomen .
    OUTPUT:
    
Findings consistent with mild to moderate pulmonary edema .