Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph was obtained . The lungs are well expanded with marked interstitial abnormality bilaterally with more focal coalescent opacities in the right upper lung in retrocardiac positions which could reflect pneumonia . Bilateral right greater than left pleural effusions may have increased slightly . These findings are unchanged to slightly worsened from the previous examination . Left subclavian central venous catheter is in unchanged position within the mid-to - lower SVC . The heart remains mildly enlarged .
    OUTPUT:
    
Moderate - to - severe pulmonary edema with coalescent right upper lung and left retrocardiac opacities which could reflect multifocal pneumonia and accompanying perhaps slightly increased bilateral pleural effusions , greater on the right .