Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is redemonstrated , with a significant right atrial contribution . There are basal and perihilar predominant interstitial opacities , with small foci of more confluent opacity in both lower lungs . Vascular upper distribution is also present . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Cardiomegaly and pulmonary edema with bibasilar foci of opacity which may relate to pulmonary edema , underlying infectious process is not excluded in the appropriate clinical setting .