Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval improvement in the bilateral , symmetric airspace opacification . No new areas of airspace opacification . Persistent vague opacity in the left upper lobe . No large effusions . Mild transverse cardiomegaly . Calcific atherosclerotic changes of the aortic arch .
    OUTPUT:
    
Interval improvement in the bilateral symmetrical airspace opacification since yesterday favors improving pulmonary edema . Short - term interval follow - up radiograph advised to reassess possible early left upper lobe pneumonia .