Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior exam , there has been a substantial decrease in the amount of right pleural fluid . A small right pleural effusion persists . There is no left pleural effusion . There is no pneumothorax . An interstitial abnormality in the right upper lobe corresponds to lymphangitic spread of cancer seen on the prior CT . No new opacities identified . There is no pulmonary edema . The mediastinal contours are normal . The heart size is mildly enlarged , and unchanged .
    OUTPUT:
    
Substantial decrease in the amount of right pleural fluid . No evidence of pneumothorax . Results were discussed with Dr . ___ at 5 : 10 p .m . on ___ via telephone by Dr . ___ at the time the findings were discovered .