Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is severe bilateral alveolar pulmonary edema , which is worse than on the most prior study from approximately 24 hours ago . As a result , new central air bronchograms are apparent . A right - sided central catheter is in unchanged position , terminating approximately at the cavoatrial junction . Surgical clips are noted in the right upper quadrant . There is no pneumothorax . Cardiomediastinal contours are difficult to evaluate due to overlying edema .
    OUTPUT:
    
Severe , worsening alveolar pulmonary edema . Underlying infectious process can not be ruled out .