Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the prior examination , the patient demonstrates opacification of the entire right lung , likely secondary to aspiration versus pneumonia . Additionally , the left lung demonstrates airspace disease suggestive of interstitial pulmonary edema , new since the prior examination . Mild to moderate stable cardiomegaly is noted . The mediastinal and hilar contours are essentially unchanged .
    OUTPUT:
    
1 . Interval progression of the patient 's aspiration versus pneumonia , now involving the entire right lung . 2 . Probable mild to moderate pulmonary edema , new from the prior exam .