Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderate cardiomegaly . The mediastinal and hilar contours appear unchanged . A stent has been placed , presumably in the right subclavian vein and across the superior vena cava . Moderate widespread interstitial and alveolar pulmonary edema is present . It is difficult to exclude small pleural effusions . There is no pneumothorax .
    OUTPUT:
    
Moderate pulmonary edema .