Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest radiograph from ___ , there has been interval increase of right lower lobe opacification . There is atelectasis of the left lung base and probably a small right pleural effusion . There is no pneumothorax . The cardiac silhouette remains top normal in size . There has been interval increase of the right hilus , which is concerning for either acute exacerbation of adenopathy or acutely dilated pulmonary artery due to embolus . The mediastinal and left hilar contours are within normal limits .
    OUTPUT:
    
1 . Worsening right lower lobe pneumonia , alternatively , depending upon clinical circumstances , pulmonary hemorrhage or large infarction . 2 . Interval enlargement of right hilus could be due to acute exacerbation of adenopathy or acutely dilated pulmonary artery due to embolus . These findings were discussed with Dr . ___ by Dr . ___ via telephone on ___ at 10 :02 a .m . , at time of discovery .