Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with most recent radiograph on ___ , there is mild increase in interstitial markings and pulmonary vascular engorgement . Again seen are moderate left and small right pleural effusions , not significantly changed . Bibasilar opacities may either represent atelectasis or pneumonia .
    OUTPUT:
    
Increase in pulmonary edema . Unchanged moderate left and small right pleural effusions . Bibasilar opacities may either represent atelectasis or pneumonia .