Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior exam , there is a new opacity involving the central portions of the right lung . Other than mild left basilar atelectasis , the left lung is clear . There is no pleural effusion or pneumothorax . The heart is mildly enlarged , and appears slightly bigger than in the prior exam . The mediastinal contours are normal . The known left lower lobe granuloma is not well evaluated on this exam .
    OUTPUT:
    
1 . New central right lung opacity . This likely represents diffuse pulmonary hemorrhage ; alternatively , an atypical pneumonia or new asymmetric edema are considerations . 2 . Mild cardiomegaly , slightly increased from the prior exam . Results were discussed with Dr . ___ at 5 : 50 a .m . on ___ via telephone by Dr . ___ at the time the findings were discovered .