Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral interstitial opacities , predominantly at the bases , as indicative of pulmonary edema . The heart is enlarged and the pulmonary vasculature is congested . No pleural effusion is seen .
    OUTPUT:
    
Mild to moderate pulmonary edema , moderate cardiomegaly , and no pleural effusions .