Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior exam , there is a new interstitial opacity , predominantly involving the right , mid and lower lung zones . There is mild vascular congestion and some Kerley B lines at the left base , suggestive of volume overload . A small right pleural effusion is stable in size . A trace left pleural effusion appears slightly decreased in size . There is no pneumothorax . Biapical scarring is stable . The mediastinal contours are normal . The heart size is mildly enlarged , and unchanged . The patient is status post a sternotomy . Sternal wires are intact . Again noted is a displaced overriding right humerus fracture , not significantly changed from prior exams .
    OUTPUT:
    
1 . New opacity in the right mid and lower lung zones , which given the asymmetry is concerning for pneumonia or aspiration . In the setting of mild pulmonary edema , asymmetric edema is also a consideration . 2 . Unchanged small right pleural effusion . Slight decrease in size of a trace left pleural effusion . Stable mild cardiomegaly . 3 . Again seen overriding displaced partially imaged right humerus fracture . Results were discussed with Dr . ___ at 4 :45 p .m . on ___ via telephone by Dr . ___ at the time the findings were discovered .