Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse hazy opacification of bilateral lung fields is associated with moderate cardiomegaly suggesting moderate pulmonary interstitial edema . Interstitial lung disease can also have this appearance . More confluent right lung base airspace opacification may represent a superimposed infectious process or atelectasis , depending on the clinical setting . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Moderate pulmonary interstitial edema . 2 . Possible superimposed infectious process or atelectasis involving the right lung base .