Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal contour is normal . The pulmonary vasculature is normal . Right infrahilar opacity is mild and may represent adenopathy or a pericardial cyst . No focal consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
1 . No good evidence of TB infection . 2 . In the absence of evidence of adenitis elsewhere , the right infrahilar opacity is unlikely to be isolated adenopathy due to TB . It is much more likely to be a pericardial cyst . Consider chest CT if there is evidence of adenopathy elsewhere .